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Originally Posted by Rekna
UNIX passwords are insecure because they are short. In this case the DNA sequence is how long? Brute force breaking it wouldn't make it insecure.
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They use just enough to make sure that they won't often get false matches.
Well, so that it's 1 in a billion anyway. That still means there's a likelihood that 6 people will match the profile as there are about 6 billion people. A 7 character password of all lowercase letters has more than 8 billion different combinations.
Obviously it's not a simple matter of brute forcing someones DNA, whatever that might involve, but yes it would need to be encrypted to stop prying eyes.
The worrying thing is that the powers that be are considering storing physical DNA samples from each person.