In the latter example, a single member of staff can now do the job of a row of checkout clerks, supported by maybe a trained engineer to fix faults in all the s

In the latter example, a single member of staff can now do the job of a row of checkout clerks, supported by maybe a trained engineer to fix faults in all the stores in a given region. Soon, maybe these too will become redundant (perhaps replaced by RFID scanners to scan your bags and bill your credit card automatically when leaving the store). One for PG's 'startup ideas so disruptive they're scary' list