David showed us how to turn it on (or off) and then various useful tips for using it with different applications. We weren't able to confirm it's iPhone only - most iPads being used did not have it but the iPad Pro may so if you can't get it to work on your iPad, it may not be you! David's most useful tip (as far as he was concerned) is the use of the space bar as a tiny trackpad for moving the cursor around text.
Thank you for a very interesting talk, left us with plenty of useful things to 'play' with.
Thank you David.