Following revelations in the US, companies in Germany are asking themselves who has potential access to their communications. Special software can help.
The latest Yahoo revelations once again raise the question: Who reads all our digital communication?
Whatsapp and its owner Facebook may have secured valuable publicity by introducing end-to-end encryption on the instant messaging app. But they have been slow to join the pack. Others have pushed encryption for years.
The UK capital London has transformed its public transport network into one that actually works. It's long used ticketing data to improve services. Now WiFi and Bluetooth could help with overcrowding.
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