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SamsungPatent applicationPhones & computersInterest 4/10

Samsung patents phone feature to check smart card battery status

Patent drawing
Patent drawing from the official filing.

Samsung has filed a patent for a method that allows a phone to check the power level of a smart card. By using near-field communication, the phone reads data from the card to display its battery status on the screen.

Why it mattersThis could help users know when to charge or replace the battery in contactless cards like transit passes or access badges.

In the filing’s own words

A terminal includes a near field communication (NFC) antenna, an NFC module configured to emit a first radio frequency (RF) signal through the NFC antenna, and configured to acquire digital data from an analog signal generated from a second RF signal received by the NFC antenna, and a processor configured to execute an application for providing a first user interface using the digital data. The digital data includes power data of a smart card emitting the second RF signal. The processor is configured to output the power data to a first user interface of the terminal to present a representation of a power state of the smart card.

What exactly they claim (claim 1)

1. A terminal comprising: a near field communication (NFC) antenna; an NFC module configured to emit a first radio frequency (RF) signal through the NFC antenna, and configured to acquire digital data from an analog signal generated from a second RF signal received by the NFC antenna; and a processor configured to execute an application providing a first user interface using the digital data, wherein the digital data includes power data of a smart card emitting the second RF signal, and wherein the processor is configured to output the power data to the first user interface of the terminal to present a representation of a power state of the smart card.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
METHOD, TERMINAL, AND SMART CARD FOR REGISTERING AND RECOGNIZING FINGERPRINT
Publication number
US20260310925A1
Application number
19389757
Filed
Nov 14, 2025
Published
Oct 8, 2026
Inventors
1
Claims
20

Classified under

G06K 19/07777 Physics & computingG06K 19/0723 Physics & computingG06K 19/07354 Physics & computingG06V 40/1306 Physics & computingG06V 40/1365 Physics & computingG06V 40/55 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.