No, there's no remote kill, and the phone home function is optional and for your convenience only. Our ASICs have a crypto mechanism that checks a license file that you must supply to the system. The license file specifies how much mining the system will do, in accordance with whatever license you've purchased. For the C200 units we are taking orders for currently, the license will be unlimited.
Do I have to provide the license file each time the miner boots up or is it unlock once and the miner is plug and play from then on?