Sentinel Tag – Ultra-Thin Disposable BLE Tracking Label + Platform Access

The Sentinel Tag is an ultra-thin, disposable BLE tracking label engineered for short- to medium-duration covert deployments where weight, concealment, and minimal signature are critical. With a thickness between 0.4 mm and 1 mm and a weight of just 4 g, the Tag can be discreetly embedded within parcels, documents, envelopes, packaging layers, folders, retail items, or sensitive evidence bags without detection. 
 
Powered by a 20 mAh Zinc-Ion, non-rechargeable, disposable battery, the Tag delivers up to 40 days of continuous operation, offering a reliable tracking solution for mission-specific logistics, chain-of-custody workflows, investigative assignments, and time-bound operational tasks. Despite its ultra-thin construction, the Tag detects BLE signals through the global BLE crowdsourced detection method, enabling proximity-based visibility, movement insights, and last-seen location updates without GPS, SIM cards, Wi-Fi, or cellular networks. 
 
The Tag is constructed from a waterproof, thermally stable paper-based substrate, designed to withstand routine handling, pressure, packaging dynamics, and environmental stresses. Activation occurs instantly by cutting the designated dotted line, energizing the tracking device.
 
Platform access is included only for the duration of the supplied 40-day battery cycle. During this period, users gain proactive monitoring capability, including geofence alerts, movement notifications, BLE detection logs, device-health visibility, and event history. This differs fundamentally from Apple “Find My” and Google “Find My Device,” which are reactive tools limited to last-known location data and user-initiated recovery attempts. 
 
Compact, silent, and nearly undetectable, the Sentinel Tag is a powerful BLE-based proximity tracker for operational environments requiring covert, lightweight, and short-duration asset visibility. 
 
KEY CAPABILITIES
 
BLE-Based Proximity Tracking
BLE signals detectable through the global BLE crowdsourced detection method 
Provides last-seen visibility, proximity insights, and movement awareness 
Requires no GPS, SIM card, Wi-Fi, or cellular network 
 
Ultra-Thin Covert Design
Thickness between 0.4 mm and 1 mm 
Weight: 4 g 
Waterproof and thermally stable substrate 
Suitable for inserting into documents, parcels, envelopes, sleeves, or concealed packaging layers 
 
Power & Lifespan
20 mAh Zinc-Ion, non-rechargeable disposable battery 
Up to 40 days operational lifespan 
Designed for short-term, mission-specific, or investigative deployments 
Rapid activation by cutting the dotted line 
 
Sensors & Alerts
BLE proximity detection 
Geo-fence entry/exit alerts 
Movement notifications 
Route monitoring and trip replay 
Battery status visibility 
 
Platform Access (Included for Supplied Battery Lifespan Only)
Free platform access for the full 40-day original battery cycle. Proactive monitoring capabilities:
Geofence violations 
Movement alerts 
BLE detection mapping 
Event history 
Device-health visibility 
 
Operational Advantages
High-value parcel and shipment monitoring 
Retail loss-prevention and covert stock auditing 
Evidence chain-of-custody and investigative workflows 
Sensitive document or credential tracking 
Covert surveillance operations 
Asset protection where visible hardware would compromise integrity 
 
Target Applications 
Wallets, passports, travel documents 
Daily-carry valuables and identification cards 
Corporate access cards and personnel ID systems 
Retail, hospitality, and facility-management assets 
Sensitive document tracking and operational kits 
Thin-profile storage or concealed placements