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Real-World Problem
Modern smartphones and wearables have become our wallets, keys, and constant companions, but their batteries rarely last a full day of heavy use. Students juggling online classes and travel, professionals on long commutes, and travellers navigating airports all face the same obstacle: at some point, the battery warning appears and work or communication stops. Carrying power banks adds weight and eventually contributes to electronic waste. Conventional “wireless” pads still require a user to stop, place the phone carefully, and remain stationary. We need a way for devices to stay charged while we live life on the move.
Gaps in Current Solutions
Fast chargers cut charge time but still tether users to a wall socket. Portable power banks solve mobility but not weight or sustainability. Inductive pads only work over a few centimetres and lose connection if the phone is lifted. Public USB ports raise data-security concerns. No mainstream system offers safe, efficient charging across several metres while the phone is in normal use or even in a pocket.
The Proposed Solution
Create long-range wireless charging zones, similar to how Wi-Fi delivers data.
Infrastructure: Ceiling or table-mounted transmitter panels emit a focused electromagnetic field or low-power RF beam.
Smart Control: Sensors detect compatible devices, track distance and orientation, and energise only the area directly around the phone, adjusting power to maintain efficiency and safety.
Device Hardware: Phones include a thin resonant coil or RF harvesting chip—technology that fits within today’s standard smartphone casing.
When a user enters a café, airport lounge, lecture hall, or bus equipped with these transmitters, their devices start topping up automatically—no cables, no specific placement.
Who Benefits
Users: True “always-charged” convenience, lighter devices, and freedom from carrying chargers.
Businesses: Cafés, co-working spaces, airports, shopping malls, and public transport systems can attract and retain customers with a premium “power everywhere” service.
Manufacturers: Phone makers can reduce battery size and cost, cut material use, and differentiate new models with built-in receivers.
Environment: Fewer disposable power banks and smaller batteries reduce e-waste and mining of rare materials.
Personal Motivation
As a student and frequent traveller, I often rely on my phone for maps, tickets, research, and payments. Running out of battery mid-journey is frustrating and sometimes risky. A world where phones charge automatically—just like connecting to Wi-Fi—would remove this daily stress and support more sustainable technology.
Technical Snapshot
The system uses resonant inductive coupling or beam-forming RF with directional antennas, operating in safe ISM frequency bands. Energy transfer at 1–3 metres has been demonstrated in research labs; our innovation is packaging it into scalable ceiling panels and IoT-based control for energy metering and user authentication.
