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For vision-impaired people, NFC tags can be attached to objects and the phone can read an audio description when the object is tapped against phone.
> There are multiple NFC standards with differences in speed, protocol, and range, including NFC-A, NFC-B, NFC-C, NFC-F, and NFC-V. The MIFARE Ultralight cards use NFC-A, which is defined by the standard "ISO/IEC 14443 Type A". Pet peeve: Calling these chips "NFC" is a bit misleading. NFC-A isn't defined by ISO 14443-A, but builds on it. NFC is an umbrella standard that defines a way of storing structured data on a w…
Yeah, then it's appropriate to call this NFC.
Makes me get out of bed and tap my phone on a specific NFC tag placed somewhere around the house, in order to turn off the alarm. Then, I may as well wake up, since I'm already out of bed : )
It's a nice companion to help perform 'habit stacking' as Atomic Habits calls it. Want to do pushups right after waking up? Place an NFC card under your workout mat, so you're forced to the mat first thing in the morning.
NFC Alarm Clock https://play.google.com/store/apps/details?id=com.nfcalarmcl... is a really great and simple Android alarm. Share if anyone has a good iOS recommendation.
The diameter of a neuron's axon is about 1 μm, this is getting close to biological levels of miniaturization.
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In general, the card emulation devices (e.g. the chips in phones) try to avoid letting any arbitrary UID be set. This makes cloning these cards more difficult than it would otherwise be. It’s not terribly difficult to find devices (USB-connected things and battery-less cards) that do allow arbitrary UIDs to be set, though.
> the card emulation devices (e.g. the chips in phones) try to avoid letting any arbitrary UID be set. I can't think of a much worse way to do security. That feels like trying to flood the market with lockpicks that don't work instead of making a more pick-resistant lock.
Comparing Montreal subway with Vancouver's skytrain: - Montreals subway stations have this gritty, distinctively french atmosphere i loved it. - Vancouvers above/below stations have no soul, distinctively anglo but above ground ones i liked. - Montreal train cars use rubber wheels to my shock! Extremely loud. - Vancouver train cars use some sort of electric system which im not familiar with ( have a few variants (new…
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I haven't really looked into the security aspects. I think that you could clone one of the Ultralight chips, but it wouldn't gain you anything because the security is in the backend. It's a lot like a printed concert ticket or boarding pass. You could print as many as you want, but the ticket is still good for just one admission. The DESFire and other secure chips contain a cryptographic key that you can't access. Wi…
Ultralight supports password authentication, and you can diversify the password from the serial number, meaning that until that password is revealed by a legitimate reader as part of a validation transaction (at which time the ticket is invalidated anyway), you can't clone it. Ultralight C does support actual cryptographic authentication.
> There are multiple NFC standards with differences in speed, protocol, and range, including NFC-A, NFC-B, NFC-C, NFC-F, and NFC-V. The MIFARE Ultralight cards use NFC-A, which is defined by the standard "ISO/IEC 14443 Type A". Pet peeve: Calling these chips "NFC" is a bit misleading. NFC-A isn't defined by ISO 14443-A, but builds on it. NFC is an umbrella standard that defines a way of storing structured data on a w…
>NFC is an umbrella standard that defines a way of storing structured data on a wide variety of existing contactless IC technologies [...] Yeah, then it's appropriate to call this NFC.
Importantly, NFC standardizes a way of storing structured data like URLs or phone numbers on NFC tags; transit tickets most likely don't use tags in that way.
This is fascinating. We were just in Europe where we experienced these tickets for the first time. I had trouble with them; I was trying to figure out how to scan them because it never occurred to me that they might contain an NFC chip. My wife, on the other hand, who is not at all technical, took it for granted that you would tap them and immediately figured it out intuitively.
You can use these around the house or car for location-tap automation. Tap on NFC tag and mobile phone can trigger a custom shortcut for local action or SSH script to Linux SBC or micro PC. Response time is about one second. Even the iPhone SE2 has an NFC reader. For vision-impaired people, NFC tags can be attached to objects and the phone can read an audio description when the object is tapped against phone.