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Blocking cards (Process (Check if the card has flag blacklisted = '…
Blocking cards
Process
Check if the card has flag blacklisted = 'YES'
Yes
Stop
No
Continue
Is the card blacklisted in the local database
Yes
Black list the card
Inform the server
No
Continue
Read & Write NFC chip
customer information
customer id
amount
transaction id
cardvalidity
points
total spend
isRegistered
last used time
isBlocked
Write data in format