Mizter T wrote:


I did initially get a bit confused as it seems there are three tones
that the Oyster readers on buses make - the high pitched acceptance
bleep, the lower rejection double bleep, and a special bleep for child
Oyster cards (perhaps also shared with student Oyster cards)

Nope, the student card makes the normal beep, presumably because it
charges the normal amount (whereas children will be free, and it's
supposed to alert the driver if an adult gets three beeps)