Thursday, March 5, 2020

Protecting user identity with Radiator SIM Pack

Nowadays, mobile operators use complementary network technologies to improve user connectivity. Mobile data traffic originally targeted for cellular networks can be offloaded to designated Wi-Fi hotspots, therefore relieving congestion in high traffic areas. By implementing SIM authentication with Radiator SIM Pack, customer experience is enhanced by seamlessly authenticating users and logging them into the Wi-Fi network.

Cellular networks use IMSI (International Mobile Subscriber Identity) as a unique identifier for every user of the network, which comprises 15 digits including the user's telephone number. When this identifier is sent by the device to the network, privacy can be compromised if the connection request is not encrypted. This encryption relies both on the operator's AAA server and the user device.

Starting from revision 2.5, Radiator SIM Pack supports IMSI encryption, also known as "Permanent Identity Encryption"; functionality specified in 3GPP document S3-170116: "Privacy Protection for EAP-AKA". This feature is already implemented by some of our operator customers to cover their AAA server encryption. Alongside device manufacturers such as Apple, who already implement identity encryption, permanent identity of the user is not exposed, increasing their privacy protection.

The latest release of Radiator SIM Pack is available for new licensees and for licenced customers with valid download access. To find out if Radiator SIM Pack suits your needs, you can contact us at and a member of our sales team will be happy to assist you. You can also contact us to renew your support contract and get access to the newest release. A full history of Radiator SIM Pack releases is available on our website.