- Joined
- Feb 11, 2007
- Messages
- 17,547
First post ever! <<fanfare>>
If the finger scan measures distance between points on the fingerprint, would it then reject someone whose fingers may have changed shape somewhat, perhaps from swelling? Both myself and DW have trouble with this particularly if we've been walking a lot, swinging our arms as we do so - tends to force fluids into the hands and making fingers swell (often I can't get rings off as a result).
It isn't just distances, but angles, etc. It is more mathematically defining the shape of the fingerprint than size.
That said, there is some percentage of people that just have trouble it seems. On my last trip, my finger failed the first time almost every day, but the second or third scan worked. It was weird.