Each business will need to develop criteria so as to identify which tools are to be monitored and therefore controlled to ensure that time and effort is devoted to managing the proper and important tools. Obviously a mobile phone supplied to a salesperson will need to be monitored and controlled to ensure that all costs are consistent with business activity. However, the mobile of the business owner is probably immune from such controls. A mobile phone may be on a contract and have a purchase price of zero, while a stapler to fix paper together may cost a few hundred dollars.