Oh creating a private key with your fingerprint is an awesome idea! I wonder if it will be possible one day?
Yeah totally awesome that way you leave your private key everywhere and anyone who knows you happen to be wealthy is powdering your door handle and emptying your btc wallet.
Then you will need to wear private key gloves which would make it even cooler
IIRC urine samples are unique and unlike gloves can not be forgotten or lost. Youd have a similar problem as with the fingerprints though, people need to urinate and the circumstances might not be secure for "dumping" your private key seed into the wilderness. Seed reminds me, sperm samples probably also work. The need to spread them in public or unintentional is usually limited. To keep the system available for everyone, how about blood samples?
Well, why only finger prints? ..... What about retina scanners? or something linked to our DNA? There are some very cool biometric scanners out there.
Do not shoot down a idea, because of the flaws in the current technology.
.... If you carry your Trezor {hardware wallet} with your built in finger print scanner with you... and it generates your private key from one of your fingers and use that finger to authenticate the device... you might have something special.
I think it's a cool idea, but the implementation should be rock solid and preffably offline on a hardware wallet.
I think it would certainly be possible, the question is whether someone actually wants to pay with their blood in order to keep their coins safe. A typical problem with biometrics still stands and that is: you cant change it. Once your fingerprint/retina scan/sperm/vaginal fluid/blood sample is leaked you cant get a new one. I still think passwords stored in memory or a password database (which in turns needs a password stored in memory) is the way to go. Keep backups digital and physical in secure locations and even if you should have problems with your memory you have a place where you can look. Well unless you forget about that place as well...
