The security guard knew this, but he wanted more money than the usual. He couldn't say it out loud though, for fear of coming out Like a greedy man or an opportunist.

Maria understood his dilemma and said, “There's no problem. Take out your phone and show me the QR code."

Without any hesitation, the security guard opened the QR code for payment on his mobile phone.

Maria then scanned the code and sent some money to his account.

For the second time that day, the man's mouth dropped open.