User:Samamc94/sandbox

In China, within these apps pose three colors as a result of the risk they pose. For example, green is good and can go about normal activities. On the other hand yellow indicates the user they have been in contact with someone who tested positive with the virus and should exercise precaution. Lastly, red indicates to the user they have the virus and should remain quarantined to not expose others. These tests and colors are shared with the local police. So every QR code is central to a city/district.