The company's 'Presto' tech already does contactless updates.

Sam Rutherford for Engadget

Apple soon won't need to physically access iPhones like the new Duo before updating them or checking returns, Bloomberg 's Mark Gurman reported. The company is reportedly using its " Presto " iOS upgrade machines to perform diagnostics on returned iPhones without opening the sealed boxes. The aim is to help employees combat theft and avoid sending perfectly good devices back to the warehouse for repackaging.

When you return an iPhone still sealed in the box, retail staff are currently required to open the packaging and check that the device works before processing the refund. The reason for that is obvious: thieves can and will steal iPhones or their parts, then attempt to return the resealed package. Once the box has been reopened, though, the iPhone obviously can't be sold as new.…