Scientists have applied e-tattoos to the chest to measure heart ... The ink can flow through hair to reach the scalp, and once dried, it works as a thin-film sensor, picking up brain activity ...

The scientists developed a self-drying, skin-conforming, ultrathin, electronic scalp temporary tattoo ... make ultrathin electronic tattoos directly on human skin—hairs and all.

A Luton Town fan has got the team's badge tattooed onto the back of his head to fulfil a promise made to his late dad. 20 years ago, Micky Hyde told his father, Terry Hyde, that he would get the ...