I went on a Caribbean cruise and all I got was this lousy token!
The token is used to access all guest services on the ship. It was provided in a lanyard when we boarded. Entering and leaving cabins required the token. Entering a leaving the ship required to token. Purchases anywhere on the ship required the token. Ten feet from our cabin you could hear the cabin door lock disengage and the display screen next to the door indicate the door was unlocked.
This post is no where near the quality you come to expect from Electronics Inside postings. Being a tech guy I was curious what was on the inside of the token. I managed to make it off the ship before I took a pen knife to crack the case.
PCB A image (front) and B image (back) fits inside C image. D image covers seals the token. It is approximately the size of a Canadian quarter.
PCB image 1 flips and the chip orientation matches the groves in the case image 2. The ellipse on PCB image 1 encloses the pin that connects to the case image 2 to connect the antenna. There are four magnets around case image 2. This creates a magnetic filed pulls the PCB and keeps image 1 tight to image 2. One of the magnets is pulled aside in image 2.
Four chip labels can be seen
U1 DIalog DA14697
U2 Sx6 H2313
U3 blank
U4 to small to read markings.
The DA1469x is a family of Bluetooth® Low Energy solutions feature-rich range of multi-core microcontroller units for wireless connectivity. I was unable to discover U2. The battery voltage measured 2.9VDC.
Tear down was fun. Discovering the insides and how things work was a blast
