I read some research a few years back where they were able to figure out passwords based on the small delays between hitting each key. eg. it takes me 100ms bet

I read some research a few years back where they were able to figure out passwords based on the small delays between hitting each key. eg. it takes me 100ms between typing an "s" and an "e", but 150ms between an "s" and an "8". Unfortunately I don't recall any identifying details. But yes, I think it's totally possible to identify people by their typing "gait" just like it is with people's walking gait.