BPX general manager Peter King said the company uses Message-Media SMS gateway to interface its booking system with the drivers' phones.

"Rather than just dispatch the job into the wild, we wanted to know the driver was active and on duty," King said. "We had a choice of investing in expensive data terminals for vehicles or to use driver's existing phones."

King said SMS works well for the company; because the coverage is good, a driver can't say the message wasn't received.

In addition to bookings, if BPX needs to communicate with drivers "for whatever reason" a broadcast SMS is a "quick and easy way" to contact the entire fleet.

In addition to the new library system, Adelaide City Council has successfully integrated SMS into its IT infrastructure monitoring applications since 2003.