The device picks up information on the colors of light reflected off your skin.
The test could cost $500 if and when it comes to market, scientists say.
One company said the tax will cost it $75 million this year.
It's a piping hot take but it's just not true, the creators of the technology confirmed.
The new brain implant could be used to help paralyzed people walk again.
An edible battery that could safely pass through the human body could open up a whole new form of ingestible medicine.
Electrodes placed in users' mouths provide them with a new way to sense their surroundings.
Amid strained relations, the countries decided to expand trade relations.