I like to build things and so my fingers can get pretty banged up. I have used a bandaid on a cut fingertip and had no problem with the cut when I played guitar. I just bound the wound fairly tightly (not enough to cut of circulation though) around the wound and I was able to play guitar with out much problem (my finger sensitivity was mutted a bit but not enough to stop me playing). I suspect any quality tape could work but if it was use too much it could gum up your stirngs. So not a permenant solution.
Captcha is a total pain in the........