This smart shower flashes when you've used too much water. (Wired UK, 1/5/2016)
Developed by French firm Start & Blue, Hydrao has built-in LED lights that change colour as more and more water is used. Once a 50 litre limit has passed it flashes red to suggest it might be time to get out of the shower.
Not ready for prime time.
The new version, shown for the first time at CES 2016, will debut on Kickstarter in September before going on sale in February or March next year for around $99 (£67).
Other CES 2016 posts:
According to this HairMax instructional video, 82 medical-grade lasers will put a smile on your face. (1/6/2016)
You may or may not get a charge out of the Digitsole Smartshoe. (1/6/2016)
Enrich your family life with this Samsung Smart Family Hub Fridge. (1/6/2016)