codemonk
Well-known member
So I have a wild idea to better protect the bikes in a condo environment:
It would be relatively cheap (less than $300) as the construction is based on commercially available components and it could be financially viable for the condo corporation without any major infrastructure changes.
Here is the idea: Lets have a small Raspebry PI based device with a standard electrical relay installed between the garage door opening motor and the sensor(s) that trigger the door. Preferably in a nondescript small industrial grade plastic box right over the exit lane.
Motorcycle owners would be issued a small Bluetoooth-LE fob by the condo for a minor monthly fee (lets say $2 / month). The fob would be placed on the bikes somewhere hard to find (lets say under the locked seat). These new low power fobs are very small and supposed to last 3 years on a battery. The Bluetooth 4 specification has some nice new features that allow proximity based computing and that is what we are going to use.
Some other advanced twists could be added to the software to further enhance the system:
How about some preventive action ?
How to test the system or check that your fobs battery is still working?
Ok this is just a wild idea by a software guy - go ahead tell me why it would not work 90% of the time.
It would be relatively cheap (less than $300) as the construction is based on commercially available components and it could be financially viable for the condo corporation without any major infrastructure changes.
Here is the idea: Lets have a small Raspebry PI based device with a standard electrical relay installed between the garage door opening motor and the sensor(s) that trigger the door. Preferably in a nondescript small industrial grade plastic box right over the exit lane.
Motorcycle owners would be issued a small Bluetoooth-LE fob by the condo for a minor monthly fee (lets say $2 / month). The fob would be placed on the bikes somewhere hard to find (lets say under the locked seat). These new low power fobs are very small and supposed to last 3 years on a battery. The Bluetooth 4 specification has some nice new features that allow proximity based computing and that is what we are going to use.
- When the thief's approach the parking garage exit with the bike in their truck the computer detect the proximity of the fob and simply prevents the door to open by opening the sensor circuit(s). They are stuck right there, meanwhile a silent alarm is sent (via wi-fi) to the building security and the owners.
- When the rightful owner wish to use their bike they just remove the fob and leave it in the parking spot before leaving.
- Guest fobs for overnight visitors may be also available for rent for a nominal fee.
- The system is optional so if somebody does not want to participate there is no cost for them.
- Even car or bicycle owners might be interested as this would work equally well for any vehicle.
- Loss of one fob would not compromises the security of the system.
- There are no keys to lose, codes to remember or anything to install on the vehicles.
- The system can be self financing so there is no cost for the condo.
Some other advanced twists could be added to the software to further enhance the system:
- We can detect Bluetooth jamming by installing a "control fob" a few meter from the device. If connection to this control fob is lost then we know that someone is using bluetooth jamming and prevent opening the door
- We can do the same with GPS signal detection. A large decrease in GPS signal could also trigger a door lockdown.
- We can add some time delay logic too. After triggering the device with a fob just backing out of range and triggering the door manually would not work either.
How about some preventive action ?
- When a careless thief enters through the door with an active GPS or Bluetooth jammer the loss of signal would also trigger a silent alarm. This would allow building security to watch them, call the police or do something even before they start stealing anything.
How to test the system or check that your fobs battery is still working?
- Just keep the fob on the bike and try to drive out. If the door is not opening then it works.
Ok this is just a wild idea by a software guy - go ahead tell me why it would not work 90% of the time.