Near-Field Communication (NFC) in BGM

Near-Field Communication (NFC) in Blood Glucose Monitoring (BGM)

NFC is rare in blood glucose meters (BGMs). As of October 2026, only three meter systems in the FDA's 510(k) database have NFC in their names [1]. NFC also sits inside FreeStyle Libre readers: the Libre 2 and Libre 3 readers use it to start a sensor, and each one has a built-in strip port for FreeStyle Precision Neo blood glucose test strips [2]. The connected meters we checked from three large brands use Bluetooth Low Energy instead [3][4][5].

What NFC does, in meter terms

Near-field communication is a radio link that works over a few centimeters at most. It runs at 13.56 MHz, and the energy in the reader's field can power a small chip that has no battery of its own [6]. That second property is why researchers keep proposing battery-free NFC sensors [6]. A phone can act as the reader, so a tag or a strip reader can draw both its power and its data link from the phone.

For someone who owns a meter, the practical difference from Bluetooth is the gesture. An FDA review of one NFC meter describes the link as two devices talking "by touching them together or bringing them into close proximity" [7]. A Bluetooth meter works differently: once paired, it can send results to a phone automatically [4].

The meter inside a FreeStyle Libre reader

Abbott's FreeStyle Libre 14 day system, approved by the FDA on July 23, 2018, came before today's Libre 2 and Libre 3 systems and is the clearest example of a reader built around close-range radio. Its reader picked up sensor data only when held within 1.5 inches (4 cm) of the sensor, and it couldn't alert anyone between scans [8]. The same reader contained a blood glucose meter based on the FreeStyle Precision Neo system, used with Precision Neo test strips [8].

The current readers keep that pairing of a radio and a strip port. In the FDA's review of the Libre 2 and Libre 3 systems, the Libre 2 reader uses NFC to start a sensor and to scan it, while the Libre 3 reader uses NFC only to start the sensor and receives readings over Bluetooth Low Energy [2]. Both readers have the Precision Neo strip port [2]. The phone app splits the work the same way as the Libre 3 reader: NFC to start a new sensor, Bluetooth for the glucose data [2].

Here's what surprised us: in the FDA's own description, a Libre reader is a CGM display and a fingerstick meter in one housing [2]. Sensor generations matter here too. Abbott's original Libre 2 and Libre 3 sensors were available through September 30, 2025, and Abbott moved patients to the Libre 2 Plus and Libre 3 Plus sensors, which need a new prescription [9]. When to rely on the sensor and when to check with a strip is a decision to make with your care team.

Standalone meters the FDA cleared with NFC

When we searched the FDA's 510(k) database in October 2026 for device names containing "NFC", three of the nine matches were blood glucose meter systems [1]. Each FDA decision summary describes NFC as a way to move stored results to a computer or phone.

• SD GlucoNavii Mentor NFC (SD Biosensor, cleared August 5, 2015). The FDA review says the NFC function is for backing up test results on a PC or smart device [7]. It is also a no-coding meter, so the user never enters a calibration code [7].
• SD GlucoNFC (SD Biosensor, cleared November 24, 2015). Its review lists "USB Cable or NFC" for linking to a computer, where the earlier meter it was compared against had USB only [10].
• GlucoDr.S NFC (All Medicus, cleared October 13, 2017). This one shows how small the difference can be. Its review describes three versions of the same meter that differ only in data transfer: all three use USB, the BLE model adds Bluetooth, and the NFC model adds NFC [11].

A 510(k) clearance means the FDA found a device substantially equivalent to one already on the market [11]. It doesn't tell you whether the device is on a pharmacy shelf, and as of October 2026 we couldn't confirm that any of these three NFC models is sold in the US. If you want the backstory on why modern meters dropped codes, see our article on calibration codes vs. no-code technology.

What the large meter brands use

The FDA reviews for the Accu-Chek Guide [3], the Contour Next One [4] and the OneTouch Verio Flex [5] describe Bluetooth Low Energy for wireless transfer. None of the three mentions NFC. For the Contour Next One, the review calls automatic Bluetooth transfer to a smart device the key feature of the new system [4].

We didn't find a manufacturer statement explaining why the large brands chose Bluetooth over NFC, so we won't guess at one. For a side-by-side look at the two radios, see our article on connectivity standards in modern glucometers.

Phone-powered strip readers in research

Research labs keep returning to one NFC idea: a meter with no battery, powered by the phone. In a 2022 proof-of-concept study, engineers in Spain built a battery-free NFC potentiostat (the circuit that applies a voltage to a strip and measures the current) for commercial Sinocare glucose test strips [6]. The phone supplied power and collected the result. It had to stay about 1 cm from the antenna, though, and moving it during a test could make the voltage drop [6].

The team calibrated the prototype with glucose solutions made up in water, from 60 to 425 mg/dL, and its readings tracked Sinocare's own meter with a 99% correlation coefficient [6]. A 2023 study from Thailand paired a smartphone and an NFC potentiostat with a custom glucose oxidase electrode and measured glucose in human blood serum [12]. Neither device is an FDA-cleared product. The 2022 prototype was tested only on lab solutions, and the 2023 study reports results in serum rather than fingertip blood [6][12].