I am boarding a plane to the U.S. in the next few hours and I had to put 2 bandaids on my fingers because of an accident. Would this cause any kind of problem with the immigration official during the biometrical scan?
I accompanied my grandmother on a trip abroad a couple of months ago, where she took a nasty fall. She had severe lacerations on each of the fingers on her left hand. If I remember correctly, the hospital gave her twenty stitches. The immigration officers didn't give her a hard time at all. However, the fact that she was both elderly and had this rather severe injury probably contributed to the officers allowing her to keep her bandages on.
So, I'm not sure what your experience would be like if you have a papercut or another minor injury. But either way, accidents happen. I would like to think that immigration officers understand that, so I don't think you'll be given too much trouble. But if they do ask you to remove your bandages, it would probably be best to be compliant.