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Remind people to do social distance via Vibration Alert:

When tag wearer A is more than 2-meter away from wearer B, it is a safe distance. The wristbands of both wearer A and B will not vibrate, yet green lights will flash. When tag wearer A is within 2-meter of wearer B, it is an alarm distance. The wristbands of both wearer A and B will vibrate, and red lights flash.

Store Contact Information:

Enable data storage function of B8 wristband through Demo APP. When tag A detects tag B within 2-meters, tag A will automatically store the ID and contact dates of tag B, and vice versa. If more tags come within a 2-meter range, tag A will automatically store the contact information of all other tag