Have there been enough such incidents in the past (i.e., landing injured away from the DZ, but no one noticed) to justify the cost of putting in a system (and the cost of false alarms)?
Exactly how much do you think a piece of paper and a pen costs? And 99.9% of the time someone not checked-in costs you no more than the price of a PA announcement.
(This post was edited by JackC1 on Dec 26, 2012, 1:57 AM)