Power Scan
When presented with a compatible NFC tag, Power Scan will enter power mode and keep the NFC field on maximum continuous power. Once in power mode you can move your LED implant around and showcase it with an unprecedented range and brightness! Power mode will stop after 30 seconds for hardware and software safety.
Some NFC LEDs like the xLED do not have an NFC chip onboard that Android is able to detect. No worries, just use another NFC tag to trigger power mode and then you can bring your xLED into the field!
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Open up Power Scan. It says "Scanning".
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Approach your LED-equipped tag (or any tag) to trigger power mode. Once it says "Powering" you are good to go.
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Bring any NFC-LED within the field and the LED will stay powered and bright at a surprising range.
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After 30 seconds, power mode will automatically stop. If you haven't had enough you can go back to step 1 and try again.
Android doesn't normally provide NFC functionality when no tag is present. This means we can't just turn the field on or off programmatically. Power scan is a hack that tricks your phone into continuously sending read commands to a tag even once the tag is removed. For that it needs to be triggered by a real tag to gain access to the NFC hardware. Once this is done the tag can be removed but the NFC protocol will keep spamming commands.
This technique is of course not intended by the manufacturers of either phones or tags. Using it for long periods of time (minutes ) is not recommended in case the chips involved get toasty.
- 🟥: No support
- 🔜: Under development
- ☑️: Untested
- ✅: Tested
- ✅ No chip (xLED) needs to be triggered by an actual tag before use
- ✅ NFC A (Apex Spectrum)
- ☑️ Mifare Classic
- ✅ Mifare Ultralight (xSIID)
- 🔜 NFC B
- 🔜 NFC F
- 🔜 NFC V