XPost: comp.os.linux.misc   
   From: robin_listas@es.invalid   
      
   On 2025-12-07 18:51, Paul wrote:   
   > On Sun, 12/7/2025 7:53 AM, Daniel70 wrote:   
   >> On 7/12/2025 3:27 pm, c186282 wrote:   
   >>> On 12/6/25 06:44, Daniel70 wrote:   
   >>>> On 6/12/2025 12:05 am, The Natural Philosopher wrote:   
   >>>>> On 05/12/2025 11:40, Daniel70 wrote:   
      
   >>>> Ah! O.K., for a while there I thought you were going to type 'shopping   
   cart' .... and we all know how 'dangerous' they can be!!   
   >>>   
   >>>     I always get the one with the wobbly wheel ...   
   >>>   
   >> .... and, if it's NOT the one with the wobbly wheel, it's the one that   
   feels like someone has left the Brakes on it on.   
   >   
   > They do have brakes.   
   >   
   > Some carts have a battery operated electronic brake.   
   > The exits at the premises have RF devices that "mark"   
   > the boundary of where the cart is allowed to be used.   
   > If you attempt to leave the premises, the brake goes on.   
   >   
   > The "cart-boy" has a remote for resetting the brake.   
      
   I understood there is no battery involved. There was an article that   
   told how to lock/unlock with a mobile phone.   
      
   https://www.begaydocrime.com/   
      
   Basically the carts work with a cable buried in the ground that   
   generates electromagnetic pulses. What this noise does is mimic that   
   pulse in your speaker coils to generate that electromagnetic signal near   
   the wheel. And since they're very dumb systems... well, voilà, hacked.   
   They don't use audio per se, the audio is a by-product.   
      
      
      
   Maybe there are other models around and some have a battery.   
      
      
   --   
   Cheers, Carlos.   
   ES🇪🇸, EU🇪🇺;   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)