TraCi is a portable, height adjustable device which is able to trace, count and help promote social distancing. TraCi is able to scan individualised QR codes due to its Arduino QR scanner and record the information contained on the QR sticker to help create a record of who entered a place. A segment screen placed above the scanner, displays the number of people currently inside the store.

This, in conjunction with the contactless infrared forehead thermometer placed below the QR scanner to take individuals temperatures, determines entry into a space.

Red and green LED lights appear on either side of the QR scanner. The green lights up to signify entry has been allowed and the red lights up to signify that entry has been denied.

TraCi uploads the data it records on who has entered a space, the time, date and duration of their stay, directly to a secure server when there is internet connection. This database is made accessible to health authorities who are involved in contact tracing, allowing them to access a more complete and accurate record of potentially exposed individuals.

TraCi should be placed at the entrance of a public space with individuals scanned when entering, in order to work to its fullest potential. TraCi scans at the entry and a QR scanner linked to TraCi scans at the exit to keep track of how may individuals have entered and exited. Thus TraCi ensures that the number of people in a space does not exceed the number of people allowed in a space in accordance with appropriate government guidelines.

TraCi relies on DC rechargeable batteries as its power source, as AC power supplies may be unreliable in some developing nations.