Waveshare 1.54inch NFC-Powered e-Paper No Battery Wireless Powering and Data Transfer (White Case)

**Ignore the badly cut screen protector I put on the device - it's not a device flaw!** So cute and fun! I love it. Let me help you love it too by sharing some 'how to' info. I use this with an older Samsung phone. It did not come with any keyring or chains, so be sure to have a small ring to loop through it! - If you use an iPhone, you download the app from the app store, it's called "NFC E-Tag" there. If you use an android phone, you download the app as an installable apk file from the instructions page mentioned below. (Why they don't have the app on Google play, I don't know. I installed on an old phone so I don't have to worry.) - Find instructions and the app by looking up "1.54inch NFC-Powered e-Paper (BB) wiki" (IGNORE it saying 'not compatible with android Samsung Google phones', that's not true! I'm using a Samsung with it, I think the text was just written or translated wrong). - The instructions page shows plenty, but the app is easy to use even without. Make sure to click "1.54 inch paper B" and you'll be ready to set up your image. When done selecting and tweaking your image, simply place the tag against your phone wherever the nfc chip hides. You'll find the spot easily as the app makes a noise. Would do perfect as a gift if you can provide that info! It should really come explained in the box.... But it doesn't.

Got this for my wife to have on her keychain. She's not the type of person who would ever remember to charge something like this...or replace the battery in something like this. So it's great that it doesn't have one. Even though the display is only black, white & red...it's able to almost trick your eyes into thinking that it's more than that. Not that it looks like a regular color screen, it's just surprising that with those three colors it can display as well as it does, albeit fairly pixelated. The app is a little janky and when you try to update the picture on the device, it sometimes seems like it only gets partway through the process. So you sometimes have to update it more than once to get it fully there. Overall it's a fun little thing. Wife likes it. Every couple weeks I'll grab her keys and put a new picture on it, which she thinks is kind of fun.

This is a great little demo of 3 color e-ink technology. Sometimes it's a little tricky to get it to write and it takes some physical adjustment with my phone, but it still works with my phone case on. If it fails to write half way through, it looks broken, like a cleared etch-a-sketch, but it still functions properly and can be reprogrammed. My only complaint is that I wish it was cheaper so that I could afford to use several as baggage tags.

Cool little gadget. I bought two, one is frozen after about 6 months - only changes pictures a few times

These are great! I bought one and loved it so much bought a second and then a third. I added little jump rings so I could add them to my keyring, purse strap, and lanyard. I also have the larger 7 inch passive NFC screen and they all use the same app. Adding pictures is easy and almost instant. I think they could even make great gifts. The images on this device are gray and red and depending on the photo,, adjustments need to be made to get the best image, but it's all done easily in the app. I can see handing these out with preloaded photos as part of a stocking stuffer, gift bag, or memento. I run a nonprofit and might hand these out with our program's image to clients.

The display only "has" two colors (black and red) plus "no color" (white). But man, with good dithering, can those 3 colors go far. I am sometimes able to get very good results displaying a real photo of a person. The app looks like put together over the weekend by a hackathon team. Nothing is intuitive and everything is clunky. Moreover, if NFC itself can be finicky, this thing is guaranteed finicky x10. However, with patience... it works as promised. If you have trouble with sending the image to the display, I suggest removing the phone's case and trying to locate where _exactly_ is its NFC transmitter.

no suggestion on the package, box, unit itself.. its epaper, maybe put it on the display? nothing andoid for sending it an image.

Super Fun keychain. Very cool. Just finding the right app? No instructions Works great

I downloaded the app “NFC E tag”, tried it for 2 hours and didn’t work. It loaded till the “Update” part but then it didn’t work. Very disappointed.

Le tag ne peut pas être programmé avec un S23Ultra.

Bastante útil día a día... Perfecto para meter un qr y usar por ejemplo como una tarjeta de fidelizacion en el supermercado o una tarjeta de visita.

It does the job and it's reasonably priced.

An diesen Produkt hat mir das kompakte Aussehen mir gefallen und mit diesen kann man kleine Bildchen als auch Namens-Adressanhänger verwenden Was mir nicht ao gefallen hat ist die zu kleine Öse mit den der kleine Anhänger an Schlüsselbund angehangen werden kann Für dicke Schlüsselringdrähte ist das Ösenloch zu klein Bei dünndrahtigen Schlüsselringen passt der kleine Anhänger prima Funktioniert bei Smartphones,die NFC habem,mit ebenen Rückseiten Die dazu gehorige App bietet nach dem offnen eine Auswahl-Übersichr von allen bisher erschienenen EPaper-Formate an Je nach welchen EPaper&Format man ausgewahlt hat kann Bildeffekte bei Bildern erstellen Bei Texten kann man Schriftstil und Größe an das jeweilige Format anpassen Die NFC Verbindung klappt perfekt um den Schlüsselanhänger mit der Waveshare-App mit Bildchen und Text zu transferieren Nach einer langen Nutzungszeit am Schlüsselbund brach die Schlüsselringloch ab Ich hätte mir einen stabileren robusteren Schlüsselringloch gewünscht