Students Invent Alarm that Protects Your Unattended Bag
February 8, 2016 | Lund UniversityEstimated reading time: 1 minute

Leave your bag unsupervised without running the risk of thieves stealing it? That could be the case as a unique idea of a small, high-tech alarm from Master's students at Lund University is now coming to life.
“I was by myself on a beach in Mexico and had to leave my bag unattended to take a swim. But while in the water I just couldn’t relax, as I was constantly worrying about my things”, says Andrew Lentz, Master's student in Entrepreneurship and Innovation and one of the students behind the innovation.
“It was right then and there that I started to think of a solution to this dilemma; of always having to worry about your personal belongings getting stolen.
In cooperation with Bo Möller and Jiang Qian, both Industrial Design programme students, the group thought of a way to construct an alarm that through using blue tooth-technology recognises the position of the owner via their smartphone or wearable.
“If your bag is moving and you aren’t - indicating that someone else is taking it - the alarm will go off and won’t stop until the bag is dropped,” says Andrew.
The same technology is also used to send push notifications, so if you are leaving your bag behind, you will still know if it is kept safe.
The alarm in its current form, looking very similar to a USB-stick, can be placed inside or outside the bag through a special hook-function.
“You can also put the alarm on “do not open” using your personal code and that way if thieves open and ransack your bag without it being moved, the alarm will also go off.”
The alarm was designed after a lot of research about thieves’ behaviour and ways of operating:
“We know that thieves will most likely drop a bag if a high-pitched alarm suddenly kicks-off. The most important thing to them is to neither be seen nor heard and they will do everything to not get caught”, concludes Andrew.
The group has started a company called Serenity and launched a Kickstarter campaign for the product.
Suggested Items
Microchip Expands Space-Qualified FPGA Portfolio with New RT PolarFire® Device Qualifications and SoC Availability
07/10/2025 | MicrochipContinuing to support the evolving needs of space system developers, Microchip Technology has announced two new milestones for its Radiation-Tolerant (RT) PolarFire® technology: MIL-STD-883 Class B and QML Class Q qualification of the RT PolarFire RTPF500ZT FPGA and availability of engineering samples for the RT PolarFire System-on-Chip (SoC) FPGA.
Infineon Advances on 300-millimeter GaN Manufacturing Roadmap as Leading Integrated Device Manufacturer (IDM)
07/10/2025 | InfineonAs the demand for gallium nitride (GaN) semiconductors continues to grow, Infineon Technologies AG is poised to capitalize on this trend and solidify its position as a leading Integrated Device Manufacturer (IDM) in the GaN market.
Bell to Build X-Plane for Phase 2 of DARPA Speed and Runway Independent Technologies (SPRINT) X-Plane Program
07/09/2025 | Bell Textron Inc.Bell Textron Inc., a Textron Inc. company, has been down-selected for Phase 2 of Defense Advanced Research Projects Agency (DARPA) Speed and Runway Independent Technologies (SPRINT) X-Plane program with the objective to complete design, construction, ground testing and certification of an X-plane demonstrator.
2025 ASEAN IT Spending Growth Slows to 5.9% as AI-Powered IT Expansion Encounters Post-Boom Normalization
06/26/2025 | IDCAccording to the IDC Worldwide Black Book: Live Edition, IT spending across ASEAN is projected to grow by 5.9% in 2025 — down from a robust 15.0% in 2024.
DownStream Acquisition Fits Siemens’ ‘Left-Shift’ Model
06/26/2025 | Andy Shaughnessy, I-Connect007I recently spoke to DownStream Technologies founder Joe Clark about the company’s acquisition by Siemens. We were later joined by A.J. Incorvaia, Siemens’ senior VP of electronic board systems. Joe discussed how he, Rick Almeida, and Ken Tepper launched the company in the months after 9/11 and how the acquisition came about. A.J. provides some background on the acquisition and explains why the companies’ tools are complementary.