Scientists at UK based Barclaycard are developing futuristic biometric technologies that will make paying with body part scans mainstream. Contactless payment has gained in popularity recently, with RFID cards and key fobs leading the way. Mobile phones are also being used as payment devices, but that's all going to be old hat once fingerprint and retnia scans are the preffered method of payment. Biometric scanning sound so easy – but just a little creepy. Writing a check is just so less invasive. Is it going to feel like going to the doctor every time you buy something?

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