Opening New Doors With The SIM Card

摘要

The cold front arrives while you are at the office-just as promised by weather forecasters-but you forgot to turn on the heat at home. No problem: You pull out your mobile phone, send a text message to your other phone you left on the dining room table. This in turn sends a wireless command to the thermostat to make the house toasty when you arrive. Once there, you pick up the phone from the table and use it to turn on the cable television, then settle in to watch the football match, which you also pay for using a credit card account you have on file with your mobile operator. During halftime, you send another wireless command to open the refrigerator door....