WhatsApp is rolling out a handful of new features over the next few weeks. To make it much easier to include new contacts, WhatsApp is introducing a brand-new QR code capability.
On video calls, which now support approximately eight individuals, WhatsApp will let you hold and press to make the most of an individuals video to complete screen. Theres also a video icon in group talks, so you can quickly start a group video call with one tap. The icon will only appear in chats with 8 or less individuals.
WhatsApp lets you add new contacts with QR codes – Engadget
