Tonights offering -something a little niche.
I see the company where I got this from no longer sells them but I will do my best to explain.
Its a NFC ( Near Field Communication ) device /button on a paracord bracelet.
JAB-D JAB-D (Micro) and the dot- With an NFC enabled device it can be used to store text, URL, links to files/video, make calls, send SMS, add a location/address, start navigation to a location, open street view at coordinates, information in case of emergency, Bitcoin address, Bluetooth connection, Configure a Wi-Fi network, sound controls and media, set display settings, manage the configuration on your device, tasks from apps, phone features, file operations, compose an email, compose a tweet, open geolocation, open an address, turn on/off camera flash (flashlight), vibrate, timestamp, talking clock, pop-up message, notification and more.
JAB-D and JAB-D (Micro) Technical Information:- the dot Technical Information:-NXP- ICODE Slix, type 5 chip for stronger connection than the JAB-D (NTAG) range112 bytes: 28 blocks (4 bytes each)Fully compatible with all NFC enabled cell phones - Android and IOSIP68 rated, dust-tight and protected against the effects of continuous immersion in waterUndetectable with hand-held/walk-through metal detectors Anti-metal We use NFC Tools Pro and NFC Tasks.
So effectively you can use any of the free Apps out there to program the button with whatever you like.

