Bitcoin ATMs are coming to the US. Robocoin, which has already installed a Bitcoin ATM in Vancouver Canada, has announced that it will install similar machines in Seattle this month and is looking to expand to Austin later this year, RT reports. The machines will be able to scan government-issue IDs such as a passport or driver’s license, and they will let users both withdraw cash from their Bitcoin wallets and buy more Bitcoins with cash. Since Bitcoin transactions use public and private keys instead of identification to determine who owns Bitcoins, the scanners aren’t strictly necessary. They’re probably being…