Fingerprint scanner sensor

Anyway I can get a fingerprint scanner. Install it outside my door and have smartthings send me a notification if the incorrect fingerprint/no fingerprint is scanned upon entry?

this is a good idea.

is this the dry contact sensor to use:

And how do we power it ? battery/AC/DC ?

thanks. These are of course better since they work on battery. But how do you connect them to a dry contact fingerprint sensor ? (since they are closed box sensors with magnetic trigger, I don’t know how to connect them as a dry contact sensor ?)

this is good. since it is battery operated, can I find a battery operated fingerprint sensor with dry contact ?