It says that the only data collected from the feature are the unique user ID created by the app, your phone’s operating system, the time of encounter, and the Relative Signal Strength Indicator. Interestingly, iOS users only need to turn on Bluetooth while Android users will have to enable both Bluetooth and location permission. The app claims that your device’s battery life won’t be greatly affected as it uses Bluetooth Low Energy (BLE) to periodically transmit information instead of being continuously used.
This feature is similar to the previously released MyTrace app, which never really gained traction and now seems to have been removed from app stores. There’s also the possibility of a companion Bluetooth token coming soon for those without smartphones, similar to Singapore’s TraceTogether app and tokens. The update is currently only available for Huawei devices through AppGallery on MySejahtera version 1.1.2, but it can be assumed that it will eventually be coming to Android and iOS. It also seems to have removed the “Check out” function on the check-in page, although it’s not certain whether this is a glitch or a permanent change. (Source: MySejahtera)