The national digital registration system SafeEntry and TraceTogether application are applications that track individual access history at locations within the network, and are currently being deployed by the Singapore Government in a number of locations that belongs to essential service industries such as supermarkets, clinics, and food and beverage outlets at more than 2,100 locations.

The SafeEntry check-in to public venues will become a simpler and faster process from April 19 with a new tap-in system. It was trialled at the mall from Feb 15.

To check-in, visitors with the TraceTogether app or TraceTogether tokens can tap their devices on the gateway box, which is slightly larger than a smartphone.

Alternatively, an operator of a venue, such as a supermarket or large shop, can download an updated version of the SafeEntry (Business) App on his phone and use the phone, instead of the gateway box, for visitor check-ins.

The SafeEntry Gateway system is being planned for a roll-out at selected crowded venues such as shopping malls, large stand-alone retail stores, cinemas, hospitals, polyclinics, and Mice (meetings, incentives, conferencing, and exhibitions) venues hosting more than 100 participants.

The gateway box works by exchanging Bluetooth signals with the TraceTogether app on a phone or token within a 25cm range. By holding the TraceTogether app or token near it, the box will beep and show a green light. The SafeEntry (Business) App works in a similar way, and will also beep and display a green screen.

People with older phones can also scan SafeEntry codes using the Singpass mobile app or phone camera. With both TraceTogether and SafeEntry programs, authorities now take 1½ day or less to identify and quarantine close contacts of Covid-19 patients, down from the previous average of 4 days.

According to Straight Times