SimonXIX’s avatarSimonXIX’s Twitter Archive—№ 36,105

  1. …in reply to @SubtleBlade
    @SubtleBlade @ijclark @O2 Ars Technica answered my technical questions: arstechnica.co.uk/business/2016/02/o2-customers-will-have-their-underground-journeys-tracked-analysed-by-advertisers/
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    1. …in reply to @SimonXIX
      @SubtleBlade @ijclark @O2 As I suspected, it only works if you use Tube WiFi because O2's cellular signals don't reach underground.
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