What would a tactile, dactyl, ersatz fractal be?

Hmmm...do tell!

Zmj will tell us when he reads it.

zmj often doesn't read the wordplay forum, but I will nudge him!

Give up?
dactyl = finger, tactile = feel or touch, ersatz = false or mistaken, fractal = a mathematical formula which, if plotted would give repeating patterns, often in swirls. A layperson might think a fingerprint meets the definition of a fractal pattern. Therefor the answere is a fingerprint.

I think that is the hardest riddle ever.

Oh, I am sorry. I had forgotten to nudge zmj.