Bendigo Bank is the third group to enter the mobile point of sale market in as many months. A sector that has, until now, struggled to get off the ground in Australia is suddenly very active.Bendigo Bank is working with technology provider Quest Payment Systems and the transaction processing company Strategic Payment Services to offer microPay, a payment service based on a device and an app that turns a smartphone or tablet into a mobile point of sale terminal.Quest is the provider of the terminal and the app, and Strategic Payments Services integrates the Quest POS terminal to the acquirer platform.Bendigo Bank and Quest will each offer microPay under their own brands. Bendigo bank will act as Quest's acquiring bank. microPay is scheduled to go to market in May.mPOS services are designed to allow tradespeople and other "businesses on the go" to take payments and issue receipts away from their business premises.In other developments, PayPal has re-launched its service, PayPal Here, so that its mobile terminal now reads card chips and magnetic strips. The original device, launched in 2012, did not comply with Visa and MasterCard security standards.Business and accounting software company MYOB launched PayDirect in February. The MYOB product offers two options: payment only, enabling SMEs to turn their smartphones into mobile point of sale terminals; and an integrated service, where the app is linked to the user's debtors and contacts files.Commonwealth Bank is also competing in this market, with a device called Leo.There is not much market research on mPOS but consulting firm First Annapolis produced a report in December 2012 estimating that there were only about 150,000 users across the EU. It predicted that the number would grow to three million users by 2017.Mint Wireless, a technology provider working with MYOB, has estimated that total mPOS transaction value in Australia will be about US$7 billion this year, rising to US$20 billion in 2016.