In the early days, public Wi-Fi networks often resembled the Wild West, where ARP spoofing attacks that allowed renegade users to read other users' traffic were common. The solution was to build cryptographic protections that prevented nearby parties—whether an authorized user on the network or someone near the AP (access point)—from reading or tampering with the traffic of any other user.
But the British Medical Association said the government was at risk of creating unrealistic expectations given how stretched GP services already were.
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Other companies are also looking skywards - to make everything from pharmaceuticals to artificial tissues.