Something I wonder: How far we are from having sensor density somewhat similar to the humans skin sensory? Would it be possible to have an autonomous sensor on

Something I wonder: How far we are from having sensor density somewhat similar to the humans skin sensory? Would it be possible to have an autonomous sensor on each termal tile that reports its integrity and the heat/pressure instead of relaying on inspections? Feeling pain is obviously very useful to us, it's pretty much the primary mechanism of detecting issues, the limits and taking care of our bodies. I suspect, maybe it can be possible to have a wireless sensors that function by RF(a nearby source that powers the sensors) or being powered by something like the heat gradient/MEMS that charges and stores energy from the movements.