Have video surveillance, from cameras in positions that people can’t readily determine, and a known, credible commitment to review footage when incidents are reported.
Test strips/straws will have both false positives and false negatives, both of which mean they don’t work for routine use—false positives would lead to panic and false accusations, false negatives mean someone could take one home and test different drugs until they find one that it can’t detect. OTOH it might make sense to stash a few behind the counter and take them out when there’s concrete suspicion.
Have video surveillance, from cameras in positions that people can’t readily determine, and a known, credible commitment to review footage when incidents are reported.
Test strips/straws will have both false positives and false negatives, both of which mean they don’t work for routine use—false positives would lead to panic and false accusations, false negatives mean someone could take one home and test different drugs until they find one that it can’t detect. OTOH it might make sense to stash a few behind the counter and take them out when there’s concrete suspicion.
Thanks.