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Common
No Beeper
“Need More
Key”
“Self –test Fail”
Device activated but not ready for
sensitive functions.
The reason should be due to missing
working keys, device is suspended due to
self-test fail or sensitive limitation, etc.
Ready
No Beeper
“Welcome”
Device ready for sensitive functions, like
transaction, Get PIN ,GET account, etc.
Tamper
Beeper per 1
second
“Tamped”
Device was tampered by physical,
temperature, or voltage attack. All
sensitive information is erased or
unrecoverable.
Device blocks all sensitive function. There
is no way to recover except to return back
to manufactory.