Siegel RFID Alarm

With the increase in bicycle usage, especially within cities, security concerns continue to be at the front of cyclists’ minds. In this war against bike theft, as with most any defensive strategy, diversification is highly effective. U-lock your frame, cable lock your wheels, lock your components, install GPS tracking — all are effective war tactics. Dennis Siegel, student at University of the Arts Bremen, decided to add yet another weapon to the war chest. Be debriefed on his advanced safety measures once you conquer the break…

While GPS tracking units will alarm you via mobile phone of possible illicit tampering (and charge you a monthly data fee), Siegel’s device is designed to alarm the thief — with 120 earsplitting decibels. It’s the classic car alarm…for your bike.

Siegel RFID Alarm Locked
Small enough to be nearly invisible

Siegel’s alarm features “omnidirectional movement sensing that detects tiny fluctuation or acceleration.” The end result is a device that not only freaks out would-be thieves, but also commiserates with haters of false-alarm spewing, overly sensitive car alarms — and for this Siegel should be applauded. He states that his bike alarm measures and differentiates between environmental variables and therefore can “distinguish between a serious theft and harmless vibrations, for instance of a passing tram.” These “smarts” elevate this concept from potentially superfluous to theoretically practical.

Siegel RFID Alarm Charging
Juicing up in urban style

Siegel has managed to keep costs low by utilizing RFID chips in place of unnecessary and pricier Bluetooth technology. An associated RFID fob will arm/disarm, activate/deactivate the device, while Gizmag is reporting the current battery technology allows for a two hour USB charge that lasts three days of normal use. This concept is only in its prototype form, not slotted for production — yet.


  1. The explosion of bike accessories like lights, trackers, stereos, and alarms need to start tapping a DC power master source. Then it can power an assist for hills. Now just add a couple wheels for stability, a roof to keep the weather out, a recumbent position for comfort, mirrors for safety, a locking trunk for security…

    Or instead of turning a bike into a car, you could just invest in a frame and skewer lock system, plus a dyno system with decent lights. All of that stuff pays for itself the first time your bike/wheels/lights aren’t stolen.

  2. That saddle looks to be the exact saddle i drew and put on for people to download. It was an initial design that i used to lay up a carbon composite saddle. I emailed this guy to see if that’s where he got it. It has over 500 downloads on grabcad and its a simple surface model i made for others to learn from.

  3. Wow, finally a Kickstarter-like concept that I actually like! I only hope the GPS tracker won’t use the same battery as the horn as the battery would be drained very quickly once the alarm sets off. But other than that, I’m sold on this.

  4. Sounds like a piezo buzzer, which are notoriously easy to muffle if the sounding holes are covered. Just hope that your thief isn’t equipped with tape!

  5. good. i want it. please tell me how to buy it. i have been using remote alarms for years -but they are chinese crap. new one every two battery changes… the wires break.
    i’m ready for a quality alarm. how?

What do you think?