So,you're advocating to put a *radioactive* paint (hydrogene 3 isotope), right next to a *high capacity lithium battery* (basically made of elemental explosivium :-D), and near a ton of non-space grade/non-military/non Rad-hardened modern extremely dense circuitry (you know the kind that is the reason why airports use a different X-Ray machine for hand luggage, just so it doesn't fry yoir electronics or photofilm) ?
on a much larger surface (thus quantity) than the typically mecanical thick whatches that use it ?

don't know if you aim to have crashiest phone ever that constantly has bad blocks on its flahs,
or if you are jalouse of Samsung owner and want to be thrown out of planes,
or simply trolling ?