2 terms

Tech terms in plain English

One-sentence answer, one paragraph for beginners, then the details: that is how we explain terms from security, internet, mobile and AI.

Security & privacy

Explained

What is a VPN? How the virtual private network works

A VPN (Virtual Private Network) builds an encrypted connection, a «tunnel», across the open internet between your device and a VPN server. Websites then see the server's IP address instead of your own, and anyone snooping on the same Wi-Fi network sees only encrypted data.

28 October 2026Read

Travel & mobile

Explained

What is an eSIM? How the digital SIM card works

An eSIM (embedded SIM) is a SIM built permanently into the device: instead of inserting a plastic card, your mobile operator loads its profile onto the chip over the internet. It is based on an open GSMA standard, works in every mainstream network just like a conventional SIM card, and can be set up with a QR code, an app or directly from your old phone.

21 October 2026Read