Thanks Dave, (and mister_e and all who've contributed),
I have to go to bed now as it's 3am and my boy's B'day tomorrow (today)....looks like I won't get the full coding down for his 'wrist scanner'...I'll work it out later and 'upgrade' him. Thanks again for all your help and if anyone actually puzzles this out I'll be all ears as to what's happening.

Good night all