I have a FlexNT half way up my forearm, I occasionally catch my backpack strap on it when I flick my backpack off my back and catch it on my forearm…I have only done it 3 times (so far), but inwardly I call myself an idiot every time.
My payment implant, I out clevered myself with the placement and had it installed shallow and atop my pinky metarpal and slightly toward my knife edge (I refer to this location as #4.5) It read great, but I would frequently catch it on my pocket and tight spaces.
My #L0, I have had 4 different implants in there over time, and each time, I have managed to “zing” that implant at least once really “good” by never my NExT implant in #R0 
