The use of Google Sheets can help you in executing a working QR code attendance system.

The Pune Mahanagar Parivahan Mahamandal Limited (PMPML) has implemented a 'Location-Based QR Code' system to track employee attendance efficiently. This initiative aims to monitor punctuality and ...

"This QR code system is secure because it complies with the Personal Data Protection Act 2010 (Act 709), and we have implemented appropriate measures,” he said.