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The IMEI code is located inside the device.
Wall mounted mobile NFC/QR mobile clock card
The IMEI code is visible on top of the view of the program.
NFC code
The code of NFC tags (often referred as ID or UID) is usually printed on the device. In some cases the code or ID isn't visible and it has to be scanned with a separate scanning tool or program to find out the code.
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The NFC tags which can be ordered the code is usually printed or carved on the front side of the tag itself.
NFC sticker
NFC stickers don't necessarily have a code, because they are often reprogrammable and don't have any information programmed to them. On the other hand the surface of NFC stickers is usually writable so you can write down the code if needed. There is also the possibility to order these pre-printed so that the code is printed on the sticker.
Valtti card
The code of a Valtti card that includes a digital identifier can be found below the barcode.
QR code
You usually create QR codes yourself (for example with a generator http://www.qr-koodit.fi/generaattori) so that you can select the code yourself or that you can use an employee's or project's existing code.
Adding IMEI/NFC/QR code to a project
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