Why are pins required on boot on devices with fingerprint readers? [duplicate]
This question already has an answer here:
Why do mobile devices force user to type password after reboot?
4 answers
Both my iPad and my android phone are configured to allow access via either a pin, or a fingerprint scan. However, immediately after a reboot, neither device allows a fingerprint for the first unlock; the pin is required instead. Both devices state "a pin is required to unlock after a reboot".
Why is this? What risk is associated with allowing a fingerprint unlock directly after a power on?
authentication biometrics boot
marked as duplicate by forest, Community♦ yesterday
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
This question already has an answer here:
Why do mobile devices force user to type password after reboot?
4 answers
Both my iPad and my android phone are configured to allow access via either a pin, or a fingerprint scan. However, immediately after a reboot, neither device allows a fingerprint for the first unlock; the pin is required instead. Both devices state "a pin is required to unlock after a reboot".
Why is this? What risk is associated with allowing a fingerprint unlock directly after a power on?
authentication biometrics boot
marked as duplicate by forest, Community♦ yesterday
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
1
I just found this duplicate. The answer explains why this is the case even with fingerprint readers.
– forest
yesterday
add a comment |
This question already has an answer here:
Why do mobile devices force user to type password after reboot?
4 answers
Both my iPad and my android phone are configured to allow access via either a pin, or a fingerprint scan. However, immediately after a reboot, neither device allows a fingerprint for the first unlock; the pin is required instead. Both devices state "a pin is required to unlock after a reboot".
Why is this? What risk is associated with allowing a fingerprint unlock directly after a power on?
authentication biometrics boot
This question already has an answer here:
Why do mobile devices force user to type password after reboot?
4 answers
Both my iPad and my android phone are configured to allow access via either a pin, or a fingerprint scan. However, immediately after a reboot, neither device allows a fingerprint for the first unlock; the pin is required instead. Both devices state "a pin is required to unlock after a reboot".
Why is this? What risk is associated with allowing a fingerprint unlock directly after a power on?
This question already has an answer here:
Why do mobile devices force user to type password after reboot?
4 answers
authentication biometrics boot
authentication biometrics boot
edited yesterday
forest
33.2k16106114
33.2k16106114
asked yesterday
Jason CJason C
187114
187114
marked as duplicate by forest, Community♦ yesterday
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
marked as duplicate by forest, Community♦ yesterday
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
1
I just found this duplicate. The answer explains why this is the case even with fingerprint readers.
– forest
yesterday
add a comment |
1
I just found this duplicate. The answer explains why this is the case even with fingerprint readers.
– forest
yesterday
1
1
I just found this duplicate. The answer explains why this is the case even with fingerprint readers.
– forest
yesterday
I just found this duplicate. The answer explains why this is the case even with fingerprint readers.
– forest
yesterday
add a comment |
1 Answer
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votes
The PIN is used to derive an encryption key, whereas the fingerprint is used only for authentication. Because the encryption key is kept in memory during runtime, it is lost after a reboot and needs to be supplied again. It is supplied via the PIN or passphrase that you are required to enter.
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The PIN is used to derive an encryption key, whereas the fingerprint is used only for authentication. Because the encryption key is kept in memory during runtime, it is lost after a reboot and needs to be supplied again. It is supplied via the PIN or passphrase that you are required to enter.
add a comment |
The PIN is used to derive an encryption key, whereas the fingerprint is used only for authentication. Because the encryption key is kept in memory during runtime, it is lost after a reboot and needs to be supplied again. It is supplied via the PIN or passphrase that you are required to enter.
add a comment |
The PIN is used to derive an encryption key, whereas the fingerprint is used only for authentication. Because the encryption key is kept in memory during runtime, it is lost after a reboot and needs to be supplied again. It is supplied via the PIN or passphrase that you are required to enter.
The PIN is used to derive an encryption key, whereas the fingerprint is used only for authentication. Because the encryption key is kept in memory during runtime, it is lost after a reboot and needs to be supplied again. It is supplied via the PIN or passphrase that you are required to enter.
answered yesterday
forestforest
33.2k16106114
33.2k16106114
add a comment |
add a comment |
1
I just found this duplicate. The answer explains why this is the case even with fingerprint readers.
– forest
yesterday