Existing solutions

There are several products that serve the same purpose as TraCi as tracing, counting and prevention; however, TraCi is able to combine all of these devices with their features all in one system

1- TraceTogether: An application developed by the Singaporean government that operates on Bluetooth signals, so that the app keeps data of other users when two or more phones are within a close range. If a user was tested positive for the virus, he/she would be asked to give that data to contact tracers (the government); they would then inform the users suspected to be infected, which would be isolated or tested to reduce the spread of the virus. However, this application has some limitations; for instance, some users complained that it provokes their privacy. It also requires the user to have a smartphone, which might not be applicable everywhere. Moreover, an infected user could refuse giving the data to the contact tracers. The application also drains significant battery life, resulting in low usage.
https://www.tracetogether.gov.sg/
aces through quick multiple target screening.
2- Estimote wearable device for workplace safety
Estimote developed the “Proof of Health” wearable devices which aims to promote workplace safety through contact tracing. The wearables transmit encrypted short-range wireless signals that will detect and remember signals from other wearables when they come close. If signals are too close, the device will vibrate, reminding employees to distance themselves. If an employee develops symptoms, they can immediately report their symptoms by pressing a button and the company can quickly locate and notify other exposed employees at risk, while maintaining the anonymity of the affected individual. However, such a device may not work as well on a public level, since it is difficult to ensure that every individual has access and will comply with wearing such a device.
https://estimote.com/wearable/

3- Thermal Scanner - Body Temperature Detection System
Scylla Thermal Scanner is an AI solution that can be used for detecting elevated skin temperature in high-traffic public places through quick multiple target screening.AI-based analytics, which, combined with a state-of-the-art thermal camera, enables continuous contactless and non-invasive accurate temperature monitoring. It can be used for preliminary screening in border checkpoints, airports, educational and government institutions, manufacturing warehouses, and hospitals.
https://www.scylla.ai/thermal-scanner
 
4- Highlight HPC015C basic simple total incoming and outgoing entrance door client traffic counting infrared human counter sensor:
The device has a sensor that detects whenever a person passes by and keep records, where one is kept at the entrance and another one at the exit, so it basically a counting device which could be used for social distancing. It uses infrared sensors, and a DC power supply (battery) is required, the number of people could be shown either using a phone or an LCD screen. The set costs around 60-80 $.
https://www.alibaba.com/product-detail/Highlight-HPC015C-basic-simple-total-incoming_62007864388.html?spm=a2700.9099375.35.8.WfdtZx