iMac with Intel chip doesn't show Touch ID icon. Is this keyboard compatible with Intel iMac?

Thanks Dialabrain (Great name!). You came up with more help than Apple themselves. I suspect what you say is true but the apple help man said 2 things: Monterey should show the icon & Silicon is several iterations back from Monterey. I'm not happy to revert to Silicon as going back can cause unintended consequences . So for now I'm quite happy with my old wireless keyboard and especially my late 2015 iMac & I don't fancy the expense of buying a new iMac on the basis of the old American maxim "if it ain't broke don't fix it" ! Thanks again

Thanks Keith. Annoying that Apple help (UK) yesterday didn't come up with that. Would have thought that even the receptionist could "triage" that! Great that saves me rushing out to get an up to date iMac! Time to reassess do I really need 'Touch ID" anyway. At the age of 80 i've got along without it so far. Thinking about it too, its a way of government and law enforcement obtaining much of the populations fingerprints before they commit a crime!

Regards