ID3 Services Limited | 74 followers on LinkedIn. Data security consultancy, software developer and specialist hardware reseller providing market-leading payment security | ID-3 is an Oxford-based data security consultancy, software developer and specialist hardware reseller. With over 20 years’ cryptographic service experience, we partner with organisations in the financial and legal sectors, as well as government departments, to provide end-to-end solutions that secure their payments operations. Our unique blend of industry implementation experience and regulatory knowledge ensures that you can rely on ID-3 to complement your encryption service strategy.