To put the Webcam on your iPhone:
iPhones don't allow one-tap installs, so it's done like this:
1. Tap the Share button - the square with an
arrow pointing up. In Safari it's at the bottom of the screen.
2. Scroll down the list and tap "Add to Home Screen".
3. Tap Add. The wave icon will appear on your
home screen, opening straight to this page.
Your browser isn't offering the automatic install right now. This is
normal for a little while after removing the shortcut - close your
browser completely, reopen this page, and try again. You can also
install it by hand any time: tap the three-dot menu (top right of
Chrome), then choose "Add to Home screen" or "Install app". On a
computer, look for a small install icon at the right-hand end of
the address bar.