[suprasanna]

Here's another person who had a very cool implementation with the actual Amazon Dash button. They messed with it (software only) to track baby data!

You could use the same method to track many other things if you got creative.

https://medium.com/@edwardbenson/how-i-hacked-amazon-s-5-wif...

[StavrosK]

That's another cool solution, but it's more hackish (since you're doing it at the network level). Too bad the Dash button isn't more hackable, it's a very nice device.

[hcf]

The lithium battery in it is super expensive too, I would be surprised if it cost less than $5 to make.