I was sort of excited to see the new Charlie Ticket/Card machines on the Blue line. Taking a cue from London Underground and installing a "touch-in-touch-out" ticket system is a good idea, especially for regular riders.
The test line is the Blue, presumably because it has the lowest ridership, and is good as a test.
Of course, the T can't do something without messing some part of it up (read: Silver Line), and what they messed up in this case is the design of the machines. When was this thing made, 1983? It looks like an ATM prototype. Check out the metal number buttons. Who uses mechanical buttons? Why make something with moving parts? Hey, MBTA, have you seen an ATM lately? How about a TOUCH SCREEN. Even with the physical design errors, they could've done a better job on the machine aesthetics. I especially like the "press 5 for audio" coupled with a dotted line to the number pad, and bland 'wintel' box color scheme.