FAQs
Everything you need to know.
General
Does M4Tag need to be charged?
No. M4Tag does not require any charging or battery. It is powered entirely by the NFC field when you tap it on a reader. This is one of the key advantages of M4Tag – it’s always ready to use, no maintenance required.
Can M4Tag read NFC tags or cards?
No. M4Tag is a tag emulator, not a reader. It can emulate (pretend to be) NFC cards, but it cannot read data from other cards. To write card data to M4Tag, you need to use the MTools BLE app on your phone.
Where can I download the app?
Download MTools BLE from the App Store for iOS or Google Play Store for Android. The app is free to download and use.
How do I update the firmware?
Firmware updates are done through the MTools BLE app via NFC. Simply open the app, place M4Tag near your phone, check for updates in settings, and follow the on-screen instructions. Visit our Firmware page for detailed instructions.
Technical
Can M4Tag clone my key fobs?
M4Tag can emulate many types of NFC cards and fobs. Compatibility depends on the specific technology used by your fob. M4Tag supports ISO14443A (MIFARE Classic, MIFARE Ultralight, etc.), ISO14443B (NFU compatible systems), and ISO15693 (vicinity cards). Note that some encrypted or proprietary systems may not be compatible.
Is M4Tag open source?
No. M4Tag is a proprietary product. The firmware and hardware designs are not open source. However, we do provide comprehensive documentation for using the device through the MTools BLE app.
What protocols does M4Tag support?
M4Tag supports multiple NFC protocols: ISO14443A (13.56 MHz, also known as NFC-A, includes MIFARE family), ISO14443B (13.56 MHz, also known as NFC-B), and ISO15693 (13.56 MHz, also known as NFC-V, vicinity cards).
How many cards can M4Tag store?
M4Tag has 4 slots, meaning you can store up to 4 different card profiles. You can switch between them using the MTools BLE app.
Purchase & Support
Where can I buy M4Tag?
M4Tag is now available from the MTools Tec official store at shop.mtoolstec.com with worldwide shipping. Visit our Where to Buy page for more details.
Does M4Tag come with a warranty?
Yes. M4Tag comes with a manufacturer’s warranty when purchased from the official MTools Tec store. Contact our support team for warranty claims.
How do I contact support?
You can reach our support team at [email protected] or through our Discord / Telegram community. Visit our Contact page for more details.
Still have questions? Contact us