Daily Mail
December 7, 2012

Medical sensors concealed within temporary tattoos could be used by coaches to fine-tune their athletes’ training, a new study claims.

Researchers at University of Toronto Scarborough invented the sensor, which comes in a thin flexible transfer adorned with a cheerful smiley-face design.

‘We wanted a design that could conceal the electrodes,’ says Vinci Hung, a PhD candidate in the university’s Department of Physical & Environmental Sciences, who was part of the team.

[...] The new tattoo-based solid-contact ion-selective electrode (ISE) is made using standard screen printing techniques and commercially available transfer tattoo paper.

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