4 ms·

Anyone know anything about those USB connectors? I was on a flight some time ago and noticed that my device said that USB debugging is now connected (Android),

by mads 10y ago

Anyone know anything about those USB connectors? I was on a flight some time ago and noticed that my device said that USB debugging is now connected (Android), when I plugged it in, so I don't think it was only for charging. Don't remember which airline it was.

yoo1I 10y ago
I remember at least one system where the USB port allowed you to plug in USB stick and then let you listen to the music you had on it. So it's just a proper USB host.
x1798DE 10y ago
I don't plug my USB devices into strange USB ports (because I don't own a USB condom): See: http://krebsonsecurity.com/2011/08/beware-of-juice-jacking/ http://krebsonsecurity.com/2011/08/beware-of-juice-jacking/
- rangibaby 10y ago
  iOS 7 onwards (AFAIK) doesn't allow a data connection by default: https://support.apple.com/en-us/HT202778 https://support.apple.com/en-us/HT202778
  - deleted 10y ago
    [deleted]
- dingo_bat 10y ago
  Not needed since android will ask you to verify PC fingerprint before exchanging any data or allowing debugging.
  - ygra 10y ago
    I guess it's a case of defense in depth. Software may have vulnerabilities that still allow for data connections despite the prompt. But no data wires being physically present cannot have that problem at all.
- cnvogel 10y ago
  There are "charging only cables" available that basically do the same stuff: They have the data-pins bridged in some strange way to persuade the phone and charger to consume/provide maximum charge current. e.g. https://www.amazon.de/gp/product/B00JL1490G https://www.amazon.de/gp/product/B00JL1490G No data transfer possible, and the particular cable linked feels as if it would have an adequate copper cross-section for the 2½A it's rated at.
  - david-given 10y ago
    Be careful with those --- the cable is lying to the phone about whether the thing you've plugged it into is a fast charger or not, so if it's not, you can end up drawing way more current than it's rated for. A well designed USB charger will just shut down if this happens. A non well designed USB charger is another matter.
viraptor 10y ago
You get to choose connection mode when you connect to any computer. The entertainment system tries to connect to your media storage so that you can play your own music/videos. (this system is often just a Linux terminal) You can always use the charging-only USB cable if you're worried about the data connection of course.
ufmace 10y ago
Mine seems to say that anytime you connect it to any computer, even if that computer doesn't even have ADB installed, much less running. Probably a subtle defense-in-depth encouragement to leave debug off when you aren't actually intending to use ADB. I wonder if it's left in from before they had the PC fingerprint check, and nobody ever bothered to take it out.

by mads 10y ago

yoo1I 10y ago

I remember at least one system where the USB port allowed you to plug in USB stick and then let you listen to the music you had on it. So it's just a proper USB host.

x1798DE 10y ago

I don't plug my USB devices into strange USB ports (because I don't own a USB condom): See: http://krebsonsecurity.com/2011/08/beware-of-juice-jacking/ http://krebsonsecurity.com/2011/08/beware-of-juice-jacking/

rangibaby 10y ago
iOS 7 onwards (AFAIK) doesn't allow a data connection by default: https://support.apple.com/en-us/HT202778 https://support.apple.com/en-us/HT202778
- deleted 10y ago
  [deleted]
dingo_bat 10y ago
Not needed since android will ask you to verify PC fingerprint before exchanging any data or allowing debugging.
- ygra 10y ago
  I guess it's a case of defense in depth. Software may have vulnerabilities that still allow for data connections despite the prompt. But no data wires being physically present cannot have that problem at all.
cnvogel 10y ago
There are "charging only cables" available that basically do the same stuff: They have the data-pins bridged in some strange way to persuade the phone and charger to consume/provide maximum charge current. e.g. https://www.amazon.de/gp/product/B00JL1490G https://www.amazon.de/gp/product/B00JL1490G No data transfer possible, and the particular cable linked feels as if it would have an adequate copper cross-section for the 2½A it's rated at.
- david-given 10y ago
  Be careful with those --- the cable is lying to the phone about whether the thing you've plugged it into is a fast charger or not, so if it's not, you can end up drawing way more current than it's rated for. A well designed USB charger will just shut down if this happens. A non well designed USB charger is another matter.

viraptor 10y ago

You get to choose connection mode when you connect to any computer. The entertainment system tries to connect to your media storage so that you can play your own music/videos. (this system is often just a Linux terminal) You can always use the charging-only USB cable if you're worried about the data connection of course.

ufmace 10y ago

Mine seems to say that anytime you connect it to any computer, even if that computer doesn't even have ADB installed, much less running. Probably a subtle defense-in-depth encouragement to leave debug off when you aren't actually intending to use ADB. I wonder if it's left in from before they had the PC fingerprint check, and nobody ever bothered to take it out.