Financed by companies in the retail, banking and industrial sectors, natural security develops a standard for secure, convenient user authentication. Natural security aspires to be synonymous with speed and security for payment and non-payment transactions while at the same time guaranteeing both protection of personal data and privacy. Natural security relies on an unique combination of 3 elements : Biometrics to authenticate the user ; A personal device such as a mobile phone to store all the information needed for this authentication ; A secure mid-range contactless technology to spare the user manipulate the device. Natural security applies : for online and offline payments, to access to services such as home-banking, cash withdrawal.