Originally Posted by
jib71
On a serious note - This sort of information must be like gold dust for the folks who get their monthly commuter pass paid by their companies.
Of course there is the classic
kiseru move, where one uses the commuting pass to enter the JR or metro network and use a
kaisuuken (11 for the price of 10!) to get out.
Don't know if it works anymore with the system being more sophisticated, but for a long time the exit wickets could not read whether the kaisuuken had been used to enter the kaisuuken area, and the commuter passes could be used to enter twice, so it worked like a charm.