http://thenextweb.com/insider/2013/08/16/coinbase-now-lets-you-send-buy-or-sell-bitcoin-via-sms/Coinbase, the one-year old Bitcoin startup that landed a $5 million investment earlier this year, is opening its virtual currency banking system up to the masses after introducing SMS-based actions.
The new feature allows anyone on any kind of mobile device to use all the features of the service. After verifying their number and setting up a PIN, users simply send a text using one of the set shortcodes. Transactions that affect account balance — send, buy and sell – are confirmed by a voice call during which the customer is prompted to key in their PIN.