WhatsApp will soon allow you to add contacts using QR code: How this new feature might work
The instant messaging platform, WhatsApp might soon allow you to share profiles and contacts through specific QR codes. According to tipster WABetaInfo, the feature is being added in the latest as part of the latest beta version - WhatsApp beta 2.51.151.
The feature was first reported last year in November and is likely to come as part of the new update. Source - WABetaInfo.