There are already plenty of UVC sanitizers on the market that can kill the majority of germ on your phone, keys, and other items. The COLLAPXI Power Bank offers more. It is a handheld UVC sterilizer that doubles as a wireless power bank to charge your phone. It has a collapsible design, so you can easily fit it in your bag.
The device uses a UVC light spectrum of 250nm to sanitize things in about 5 minutes. When expanded to 3x its collapsed size, you will be able to disinfect larger items. The wireless power bank has 10,000mAh capacity. You can find this product on Kickstarter at this point.[where to get it]