BPM Chase Settings

So I have been running a couple shows recently using chases on my masters. I found it was a chore to have a iPhone out to get the BPM of the music and then change it on the chase. I was thinking it would be handy if the console could read and set the BPM by the operator hitting that masters bump button or play button to the beat. This would have been much easier at the last show I was working because I didn't have a iPhone handy with the BPM calculator. I am not sure if this has been discusssed in previous threads, but I could see the usefullness for some situations.
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