I am familiar with guitar tabs which are much easier to learn and read than sheet music. Mainly because it is a direct mapping from the notation to the guitar frets; you don't have to do any translation really. The strings are displayed on the tablature, and the numbers indicate the fret position. Sheet music, on the other hand, requires you to memorize a system and then translate that system to the guitar's fret board. However, once you learn it I guess you could more easily transfer the skill to other instruments.
I am wondering if tablature is likewise easy for the piano. I have just encountered it so haven't learned it yet, but I wanted to see if it was easier to use than sheet music like the guitar. I can't really imagine how it would work, because you probably don't think of the keys as numbers 1-88, and maybe it's possible to hit more than 10 notes at a time, so it's not mapped to your fingers. But yeah I will need to learn it better, but wanted to ask first if it was useful and/or easier than sheet music for piano.