When people talk about "tracker technology," they tend to use the words GPS, Bluetooth, and LTE interchangeably — as if they're just different grades of the same thing. They're not. They're three fundamentally different technologies built on different physics, with different infrastructure requirements and radically different capability profiles. Understanding what each one actually does makes it immediately clear why one category of trackers is able to find a stolen bag in another country while another can only tell you your keys are "nearby."
What it does: Bluetooth Low Energy (BLE) is a short-range radio protocol. Your tracker broadcasts a signal. Any compatible device within roughly 10–30 metres can receive it.
What it can't do: Bluetooth has no awareness of location. A Bluetooth tracker doesn't know where it is — it only knows whether it can be heard. The location information you see in an app comes from your phone, not the tracker. Your phone detected the signal and reported its own GPS coordinates as a proxy for the tracker's position.
When the tracker is out of range of any compatible device, it has no way to report anything. It's broadcasting into silence. For a full explanation of what happens next (crowd networks), see our previous article on how BLE trackers work.
What it does: The Global Positioning System is a network of 31 satellites in medium Earth orbit, operated by the US Space Force. Your GPS receiver listens for signals from multiple satellites simultaneously, calculates the time it took each signal to arrive, and uses that to triangulate its position on Earth's surface — typically to within 3–10 metres.
What makes it different: GPS is a one-way, receive-only system. Satellites constantly broadcast their position and a precise timestamp. Your receiver does the maths. Nothing is transmitted from the device — there's no way for GPS to reveal your location to a satellite, and no way for satellites to track devices. It's entirely passive reception.
This means GPS can determine position anywhere on Earth with a clear view of the sky. It works in the middle of the ocean, in a field, in a foreign country, in a parking garage (with limitations) — anywhere satellites are visible.
GPS solves the location problem but creates a new one: the device knows where it is, but has no way to tell you. GPS is receive-only. To transmit coordinates, you need a separate communication channel. That's where LTE comes in.
GPS also requires a clear sky view. Inside dense buildings, underground, or with significant obstruction, GPS accuracy degrades or fails entirely. Modern chipsets handle this better than older ones, and hybrid positioning (combining GPS with cell tower triangulation) fills in many gaps.
What it does: LTE (Long-Term Evolution) is the cellular technology your phone uses for data. An LTE modem in a tracker gives it a direct connection to mobile networks — the same infrastructure your phone calls and data runs on.
What it enables: A device with LTE can send data independently, without a phone nearby, without a Wi-Fi network, without any third party. It has its own connection to the internet. When combined with GPS, it means a tracker can determine its exact position and immediately transmit that position to a server — which you can view in an app, in real time.
LTE coverage maps are public. In the US, the major networks cover over 98% of the population and vast swathes of land area. Internationally, roaming agreements mean a single embedded SIM can work across dozens of countries.
A device with GPS and LTE has two capabilities that Bluetooth trackers fundamentally cannot have:
This changes the interaction model entirely. With a BLE tracker, you wait and hope someone walks by. With a GPS+LTE tracker, you open the app and ask. The device answers.
The reason BLE trackers existed in the first place is power. GPS chipsets and cellular modems consume orders of magnitude more energy than a BLE radio. A coin cell that runs a BLE tracker for a year will run a GPS+LTE device for a matter of hours under continuous operation.
This is real, and it matters. But it's a solvable engineering problem rather than a fundamental limitation:
Ankhora uses exactly this approach: in typical use with occasional GPS polling, the battery runs for around 30 days. With continuous GPS + LTE active, 3–5 days. The device is rechargeable via a magnetic connector, so there are no coin cell replacements.
Each technology genuinely excels in specific scenarios. Being honest about this matters:
Ankhora is a GPS + LTE tracker in a credit card form factor. It fits in any wallet. The embedded eSIM is included — no additional SIM to buy or activate. The LTE data plan is part of the Premium subscription at $4/month.
It also includes Bluetooth — both for the free tier (proximity tracking, "ring to find it nearby") and as a power-saving mechanism in the paid tier. When your phone can see it via Bluetooth, there's no need to poll GPS. The device conserves power for when it's actually needed.
The fundamental difference between Ankhora and every BLE tracker isn't a feature — it's a property of the underlying physics. A BLE tracker can never tell you where something is in real time, because it has no way to know and no way to tell you. GPS + LTE can. The rest is engineering.
GPS + LTE in a credit-card form factor. No crowd network, no stale data. Join the founding member waitlist before launch.