According to a press release from the Office of Congressman Mike Thompson, dated March 1, 2012:
Congressman Mike Thompson (CA-1) today released the following statement notifying Social Security beneficiaries that beginning exactly one year from today, March 1, 2013, those not already signed up for direct deposit will start receiving their monthly benefits through direct deposit or a prepaid debit card. “Starting next year all Social Security recipients – and all others receiving federal benefits – will get their payments directly deposited into their bank accounts – meaning folks will be getting their benefits quicker and more easily,” said Thompson. “If you haven’t set up direct deposit with the Social Security Administration, please take the time to sign up. These changes will not impact the amount of benefits you receive.”
To sign up for direct deposit, or to receive a prepaid debit card, you can visit GoDirect.org or call the Go Direct helpline at (800) 333-1795.