e‑bike theft pain — low‑maintenance e‑bike with built‑in GPS & alarm

About 250 million e‑bikes are in use globally and owners—from urban commuters and delivery riders to fleet operators—face frequent theft and loss of use that can mean hundreds or thousands of dollars in replacement and downtime. Existing bolt‑on trackers are often removable, require frequent charging, or are easy to defeat, leaving a large portion of riders underserved. You could build a low‑maintenance, integrated e‑bike security system: a sealed, vehicle‑mounted GPS tracker with tamper sensors, audible alarm, and LTE‑M/NB‑IoT connectivity via eSIM for always‑on location, combined with a simple recovery workflow and optional subscription app. Design choices would prioritize months of battery life, over‑the‑air updates, privacy controls, and the ability to relay positions through crowdsourced smartphone networks to boost recovery odds even when cellular is poor. This is a timely market: rising e‑bike adoption expands the addressable base, and our back‑of‑envelope market estimate is $15.0B (250M bikes × $60/year amortized device plus subscription), while low‑power cellular and cheaper eSIMs have reduced connectivity costs and complexity. Competition is medium—standalone trackers, insurance‑bundled devices, and platform players exist—but the economics favor integrated solutions that lower total cost of ownership. To stand out you’ll need tight OEM or aftermarket integration, a robust tamper‑resistant enclosure, clear privacy and data‑sharing policies, and partnerships with police, insurers, or recovery networks to prove outcomes; these are realistic strengths but require upfront hardware investment, certification, and channel development. If you can execute hardware reliability, low recurring costs, and verifiable recovery metrics, the unit economics and market tailwinds make this worth pursuing; if you prefer pure software or want faster time‑to‑market without hardware complexity, consider alternative service‑layer plays first.