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  • FIRST POST
    • johnsmith1890
    • By johnsmith1890 12th Jun 19, 8:07 PM
    • 558Posts
    • 456Thanks
    johnsmith1890
    Casinos knew my mobile number
    • #1
    • 12th Jun 19, 8:07 PM
    Casinos knew my mobile number 12th Jun 19 at 8:07 PM
    I recently visited Macau. As I approached the port I received a welter of text messages from the local casinos inviting me to give them a load of money. From the technical point-of-view, how do they get access to your mobile number? I never send my number when phoning/texting. Are the network operators complicit in this?
Page 1
    • forgotmyname
    • By forgotmyname 12th Jun 19, 8:30 PM
    • 29,464 Posts
    • 12,111 Thanks
    forgotmyname
    • #2
    • 12th Jun 19, 8:30 PM
    • #2
    • 12th Jun 19, 8:30 PM
    Or you were connected to their wifi.
    Punctuation, Spelling and Grammar will be used sparingly. Due to rising costs of inflation.

    My contribution to MSE. Other contributions will only be used if they cost me nothing.

    Due to me being a tight git.
    • johnsmith1890
    • By johnsmith1890 12th Jun 19, 8:33 PM
    • 558 Posts
    • 456 Thanks
    johnsmith1890
    • #3
    • 12th Jun 19, 8:33 PM
    • #3
    • 12th Jun 19, 8:33 PM
    Or you were connected to their wifi.
    Originally posted by forgotmyname

    No, WiFi was definitely off, as was roaming.
    • motorguy
    • By motorguy 12th Jun 19, 9:44 PM
    • 19,325 Posts
    • 12,018 Thanks
    motorguy
    • #4
    • 12th Jun 19, 9:44 PM
    • #4
    • 12th Jun 19, 9:44 PM
    I recently visited Macau. As I approached the port I received a welter of text messages from the local casinos inviting me to give them a load of money. From the technical point-of-view, how do they get access to your mobile number? I never send my number when phoning/texting. Are the network operators complicit in this?
    Originally posted by johnsmith1890

    Out of curiosity, how do you not send your number when texting?
    Life has never given me lemons.

    It has given me anger issues, anxiety, a love for alcohol and a serious dislike for stupid people, but not lemons.
    • Lorian
    • By Lorian 12th Jun 19, 10:09 PM
    • 4,847 Posts
    • 2,826 Thanks
    Lorian
    • #5
    • 12th Jun 19, 10:09 PM
    • #5
    • 12th Jun 19, 10:09 PM
    google "beacon marketing"
    • johnsmith1890
    • By johnsmith1890 13th Jun 19, 10:31 AM
    • 558 Posts
    • 456 Thanks
    johnsmith1890
    • #6
    • 13th Jun 19, 10:31 AM
    • #6
    • 13th Jun 19, 10:31 AM
    Out of curiosity, how do you not send your number when texting?
    Originally posted by motorguy

    You're right. I thought turning off 'Send Your Number' would apply to texts as well, but it doesn't. Although a bit of research showed that you can do this in a roundabout way - as many companies do when they're texting you. Regarding Beacon Marketing, I'm not sure this was happening. I received texts, some with source numbers, others not. There was no interaction with any apps. I also received a hectoring text from the Macau Government warning about smoking in bus shelters (cheeky gits). I'm surprised this sort of thing doesn't happen back here. There must be great scope for the Nanny State in this respect.
    • lammy82
    • By lammy82 13th Jun 19, 2:16 PM
    • 449 Posts
    • 411 Thanks
    lammy82
    • #7
    • 13th Jun 19, 2:16 PM
    • #7
    • 13th Jun 19, 2:16 PM
    This is done using "Location Based Services" and yes the carriers are in on the deal. Presumably it shouldn't allow the advertisers to actually get your mobile number, unleses you reply to a message. They just pay to have messages sent on their behalf based on your location. It exists in a similar form in the USA as well: https://www.protexting.com/location-based-marketing.html
    Last edited by lammy82; 13-06-2019 at 2:19 PM.
    • that
    • By that 13th Jun 19, 6:07 PM
    • 1,284 Posts
    • 713 Thanks
    that
    • #8
    • 13th Jun 19, 6:07 PM
    • #8
    • 13th Jun 19, 6:07 PM
    This thread got my interest, especially Lorian and Lammy82.

    I was thinking if it would be possible to attach a Pi security camera, and a usb wifi dongle to listen, then harvest the mobile mac address as people pass by (rough neighberhood).

    Looks like at least for wif that is not possible as the phone goes into listen mode, rather than broadcast, so the Pi would have to sent out a broadcast to something which it already knows, like Mc D's wifi, and hope the phone responds which is a bit hit and miss.
    Last edited by that; 13-06-2019 at 8:47 PM.
    • Uxb1
    • By Uxb1 13th Jun 19, 6:33 PM
    • 275 Posts
    • 389 Thanks
    Uxb1
    • #9
    • 13th Jun 19, 6:33 PM
    • #9
    • 13th Jun 19, 6:33 PM
    Well you were in effect in China where the government has rather different approach to privacy and the control of their citizens to that of the West.
    So I'd expect that your mobile number once it had been detected as being in the area was logged and given out freely by the local network to the government under edict and its 'friends'.
    Indeed as you say you got a public information warning from the Government of Macau.
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