Snooper's charter: cafes and libraries face having to store Wi-Fi users' data

Theresa May gives first hint costs may far exceed 240m estimate as it emerges even small-scale providers could be targeted

Coffee shops running Wi-Fi networks may have to store internet data under new snooping laws, Theresa May has said.

Small-scale networks such as those in cafes, libraries and universities could find themselves targeted under the legislation and forced to hand over customers' confidential personal data tracking their web use.