From 883ddcf5547774b7477ee8a41269322eeeb9a7b8 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 22:14:23 -0600 Subject: [PATCH 01/12] start biometrics article --- blog/posts/biometrics-explained.md | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 blog/posts/biometrics-explained.md diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md new file mode 100644 index 00000000..eacca8b4 --- /dev/null +++ b/blog/posts/biometrics-explained.md @@ -0,0 +1,18 @@ +--- +date: + created: 2024-11-30 +categories: + - Opinion +authors: + - fria +tags: + - Biometrics +license: BY-SA +--- +# Biometrics Explained + +Biometrics are a convenient and secure way to authenticate our devices. Many of us use and trust the biometrics of our devices without much thought, but are they really secure? With so many different types, which ones are the best? + +## Fingerprint + +One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. \ No newline at end of file From 2cc27c0630dbefe99ec91794a03540cfee7fddb8 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 22:20:24 -0600 Subject: [PATCH 02/12] add fingerprint info --- blog/posts/biometrics-explained.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index eacca8b4..d619e5bb 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -15,4 +15,7 @@ Biometrics are a convenient and secure way to authenticate our devices. Many of ## Fingerprint -One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. \ No newline at end of file +One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. + +As an aside, it's thought that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). + From 5dbaf32b8bbba35f32fd066865899f5b0fffc8fc Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 22:20:57 -0600 Subject: [PATCH 03/12] wording --- blog/posts/biometrics-explained.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index d619e5bb..7b43ca94 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -17,5 +17,5 @@ Biometrics are a convenient and secure way to authenticate our devices. Many of One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. -As an aside, it's thought that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). +As an aside, it's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). From a58c5181948a9af39a47be82c77897fbfdd500bb Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 22:54:09 -0600 Subject: [PATCH 04/12] add annotation --- blog/posts/biometrics-explained.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 7b43ca94..9e52f4e8 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -15,7 +15,7 @@ Biometrics are a convenient and secure way to authenticate our devices. Many of ## Fingerprint -One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. +One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. { .annotate } -As an aside, it's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). +1. It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). From d2f4d788614d5eff1e85289ec99575e7792be390 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 22:56:39 -0600 Subject: [PATCH 05/12] add more --- blog/posts/biometrics-explained.md | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 9e52f4e8..98dacab1 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -11,11 +11,10 @@ license: BY-SA --- # Biometrics Explained -Biometrics are a convenient and secure way to authenticate our devices. Many of us use and trust the biometrics of our devices without much thought, but are they really secure? With so many different types, which ones are the best? +Biometrics are a convenient and secure way to authenticate our devices. Many of us use and trust the biometrics of our devices without much thought, but are they really secure? With so many different types, which ones are the best? ## Fingerprint One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. { .annotate } 1. It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). - From a8f5b29c9ba1c7ea4d3323d46518d99e73f05807 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 23:20:22 -0600 Subject: [PATCH 06/12] fix annotation --- blog/posts/biometrics-explained.md | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 98dacab1..56241b05 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -15,6 +15,9 @@ Biometrics are a convenient and secure way to authenticate our devices. Many of ## Fingerprint -One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. { .annotate } +One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. (1) +{ .annotate } + +1. It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). + -1. It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). From 68ed697c9bff8d910f9bdd81bbbfd06b635babfb Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 23:41:46 -0600 Subject: [PATCH 07/12] add types of sensors --- blog/posts/biometrics-explained.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 56241b05..3cf3a3cd 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -20,4 +20,8 @@ One of the most recognizable types of biometric authentication has to be the fin 1. It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). +There four main ways we accomplish this: optical sensors, capacitive sensors, ultrasonic sensors, and thermal sensors. + +### Optical Fingerprint Sensors + From 91e89ea26c3b9b139b5560e6cece5cf26d63535b Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sat, 30 Nov 2024 23:51:09 -0600 Subject: [PATCH 08/12] add optical sensor --- blog/posts/biometrics-explained.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 3cf3a3cd..0dbfecef 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -24,4 +24,6 @@ There four main ways we accomplish this: optical sensors, capacitive sensors, ul ### Optical Fingerprint Sensors +An optical sensor works just like you'd think it would: by taking a picture of your fingerprint and turning it into data. These are the cheapest and least secure option. They're potentially vulnerable to an attacker simply taking a picture of your fingerprint, since they only capture a two-dimensional image. +Many devices implement one of these sensors under the display, you can tell if you're does because it will flashbang you when you try to scan your finger. This happens so the optical sensor can capture a clear image of your finger. From 119e0d2a2ef74f23b10267aa9f146500531778d5 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sun, 1 Dec 2024 00:03:48 -0600 Subject: [PATCH 09/12] add fingerprint icon --- blog/posts/biometrics-explained.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 0dbfecef..43f07358 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -18,7 +18,7 @@ Biometrics are a convenient and secure way to authenticate our devices. Many of One of the most recognizable types of biometric authentication has to be the fingerprint reader. The idea is that everyone has a fairly unique fingerprint, so we should be able to distinguish between your fingerprint and someone else's reliably. (1) { .annotate } -1. It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). +1. :material-fingerprint: It's theorized that the reason humans have fingerprints in the first place is to [enhance our sense of touch](https://www.science.org/doi/10.1126/science.1166467). There four main ways we accomplish this: optical sensors, capacitive sensors, ultrasonic sensors, and thermal sensors. From bebef88af87dffced7c361e116e52bf7284bce5e Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sun, 1 Dec 2024 00:04:49 -0600 Subject: [PATCH 10/12] grammar --- blog/posts/biometrics-explained.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 43f07358..2f9223f6 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -26,4 +26,4 @@ There four main ways we accomplish this: optical sensors, capacitive sensors, ul An optical sensor works just like you'd think it would: by taking a picture of your fingerprint and turning it into data. These are the cheapest and least secure option. They're potentially vulnerable to an attacker simply taking a picture of your fingerprint, since they only capture a two-dimensional image. -Many devices implement one of these sensors under the display, you can tell if you're does because it will flashbang you when you try to scan your finger. This happens so the optical sensor can capture a clear image of your finger. +Many devices implement one of these sensors under the display, you can tell if yours does because it will flashbang you when you try to scan your finger. This happens so the optical sensor can capture a clear image of your finger. From 722598facf77645a4c8d20dff4d5f69642b6ecb8 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sun, 1 Dec 2024 00:05:30 -0600 Subject: [PATCH 11/12] grammar --- blog/posts/biometrics-explained.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 2f9223f6..0ef9fb6f 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -26,4 +26,4 @@ There four main ways we accomplish this: optical sensors, capacitive sensors, ul An optical sensor works just like you'd think it would: by taking a picture of your fingerprint and turning it into data. These are the cheapest and least secure option. They're potentially vulnerable to an attacker simply taking a picture of your fingerprint, since they only capture a two-dimensional image. -Many devices implement one of these sensors under the display, you can tell if yours does because it will flashbang you when you try to scan your finger. This happens so the optical sensor can capture a clear image of your finger. +Many devices implement one of these sensors under the display. You can tell if yours does because it will flashbang you when you try to scan your finger. This happens so the optical sensor can capture a clear image of your finger. From cf60afbc4e494fb1a52902110fa28765073ea077 Mon Sep 17 00:00:00 2001 From: fria <138676274+friadev@users.noreply.github.com> Date: Sun, 1 Dec 2024 09:28:46 -0600 Subject: [PATCH 12/12] add capacitive sensors --- blog/posts/biometrics-explained.md | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/blog/posts/biometrics-explained.md b/blog/posts/biometrics-explained.md index 0ef9fb6f..2db092a6 100644 --- a/blog/posts/biometrics-explained.md +++ b/blog/posts/biometrics-explained.md @@ -27,3 +27,14 @@ There four main ways we accomplish this: optical sensors, capacitive sensors, ul An optical sensor works just like you'd think it would: by taking a picture of your fingerprint and turning it into data. These are the cheapest and least secure option. They're potentially vulnerable to an attacker simply taking a picture of your fingerprint, since they only capture a two-dimensional image. Many devices implement one of these sensors under the display. You can tell if yours does because it will flashbang you when you try to scan your finger. This happens so the optical sensor can capture a clear image of your finger. + +### Capacitive Fingerprint Sensors + +Capacitive sensors measure the electrical conductivity of your finger. These are much more secure than optical sensors since they can't be fooled with an image. They're also tough to fool with prosthetics as different materials will have different electical properties. + +Capacitive sensors won't work if the [tissue is dead](https://www.livescience.com/62393-dead-fingerprint-unlock-phone.html), since dead tissue loses all electical charge. So morbid worries about someone using your dead body to unlock your phone can be assuaged. + +Conveniently they also don't require a light source under them to work. + +### Ultrasonic Fingerprint Sensors +