Anker’s Eufy brand has launched the SmartTrack Card E40, its first tracker compatible with the Android Find My Device network, priced at $34.99. The credit-card-shaped device allows Android users to locate lost items via Google’s crowdsourced network, marking a shift in the competitive landscape of third-party tracking hardware.
The release ends a nearly two-year wait for a native Android-integrated solution from Eufy. While the company previously dominated the Apple Find My ecosystem with its SmartTrack line, the E40 represents a strategic pivot toward the Google Find My Device (FMD) network. This isn’t just a new SKU; it’s a play for the massive Android install base that previously lacked a diverse range of slim-profile, third-party hardware options.
How does the SmartTrack Card E40 integrate with Android?
The E40 leverages Google’s Find My Device network, which utilizes a decentralized mesh of billions of Android devices to locate lost tags. When the E40 is out of Bluetooth range of the owner’s phone, it emits a secure Bluetooth Low Energy (BLE) signal. Any participating Android device that detects this signal uploads the location to Google’s encrypted cloud, which then notifies the owner.
Unlike proprietary trackers that require a dedicated app for location updates, the E40 integrates directly into the system-level Android 14 framework. This reduces latency and removes the friction of third-party account management for basic tracking tasks.
The hardware is designed specifically for wallets. By utilizing a thin-film battery and a compact PCB, Eufy has minimized the footprint, though this necessitates a different power profile than the thicker, coin-cell powered SmartTrack pods.
Comparing the E40 to the broader tracker market
The $34.99 price point positions the E40 as a mid-range alternative to the Google Chipsole and various Tile iterations. The primary differentiator here is the form factor: the “card” design targets the specific use case of wallet tracking, where a traditional disc-shaped tracker would be too bulky.
| Feature | Eufy SmartTrack Card E40 | Standard Disc Trackers |
|---|---|---|
| Network | Android Find My Device | Various (Proprietary/Apple/Google) |
| Form Factor | Card (Wallet-ready) | Circular/Pod |
| Price | $34.99 | $25 – $39 |
| Integration | Native Android System | Often App-Dependent |
One significant trade-off in card-style trackers is battery longevity. Because they cannot house a standard CR2032 coin cell, they rely on thinner, non-replaceable batteries. This means the E40 is a consumable device with a finite lifespan, unlike the more durable pod versions.
Why this matters for the Android ecosystem
For years, Apple’s Find My network enjoyed a “hardware moat.” Third-party manufacturers like Anker were eager to build for Apple because the API was open to certified partners, creating a flood of cheap, compatible AirTag alternatives. Android’s equivalent, the Find My Device network, has been slower to roll out widespread third-party hardware support.
The entry of Eufy into this space signals that Google’s network is finally mature enough to attract high-volume hardware partners. This breaks the platform lock-in that previously pushed Android users toward Tile or Samsung SmartTags, both of which operate on more fragmented or proprietary networks rather than a universal OS-level mesh.
This move also highlights a shift in BLE (Bluetooth Low Energy) implementation. By adhering to Google’s specific encryption and broadcasting standards, Eufy is ensuring that the E40 doesn’t just “work” with Android, but integrates into the security architecture that prevents malicious tracking—a key requirement for any device entering the FMD ecosystem.
The 30-Second Verdict
The SmartTrack Card E40 is a pragmatic addition to the Android ecosystem. At $34.99, it provides a necessary form factor (the wallet card) for a network that has historically been underserved by third-party hardware. While the non-replaceable battery is a known limitation of the card design, the native integration with Google’s Find My Device network makes it a superior choice for Android users over standalone proprietary trackers.
