Amber was a prototype for a mobile phone charging station for public places. You drop your phone in an empty compartment, lock it using a scan of your fingerprint, and your phone will charge automatically. The entrepreneurs behind the product pitched leasing Amber charging stations to bars, malls, airports, movie theaters, arenas, and other venues to offer as a convenience to their customers. The sharks didn’t believe the product would be secure and didn’t see a future in the business plan. As of this post, the amber website is down and their social media sites have been abandoned. In an article on medium.com co-founder Kyle Byrd says they did get some investment elsewhere as a result of being on Shark tank, and were able to lower their cost per unit, but ultimately the product was difficult to develop and scale effectively.