NFC sticker: stick it at the entrance or behind the bar. The employee holds their phone against it, the app opens, and one tap clocks them in or out. The sticker creates a unique code at every tap, so it only works on the spot, not from a photo or a shared link.
QR kiosk: put a tablet on the kiosk page. The code refreshes itself; the employee scans it with their phone.
Manual: a manager enters or corrects hours under Hours. Sick, waiting day, holiday and admin hours are entered by the manager; employees cannot record those themselves.
Rounding and the window in which employees may still add an entry themselves are set under Settings, Clock rules.
Afiyet never stores location data. The sticker or the code proves presence; nothing more is needed.