MARTA said in a statement that the glitch -- which left the machines unable to accept all forms of payment for several days -- was ``extremely unusual.''
Officials said the problem was caused by a software upgrade meant to comply with the latest credit and debit card security standards.
The system only accepted cash between Aug. 31 and Sept. 4. A partial fix, for credit cards, was made on Sept. 4, in time for Tuesday's rush hour. The debit card fix was announced Sunday afternoon.
http://accesswdun.com/article/2012/9/252737