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Jakob's Personal Webpage · Dec 24, 2021

Dollar Bin Reverse Engineering

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The background for this project is a lesson in avoiding dishonest vendors. Two years ago, I was looking to purchase a smart watch with sleep tracking capabilities; I've always had difficulty sleeping and wanted a way of finally quantifying that difficulty. One of my requirements was the ability to pull data off of the watch without the use of proprietary software , so the only options I was…

The background for this project is a lesson in avoiding dishonest vendors. Two years ago, I was looking to purchase a smart watch with sleep tracking capabilities; I've always had difficulty sleeping and wanted a way of finally quantifying that difficulty. One of my requirements was the ability to pull data off of the watch without the use of proprietary software, so the only options I was seriously considering were those on Gadgetbridge's "supported devices" list. At the time, I was still in high school, and still awed by the affordability of consumer electronics on websites such as AliExpress (woefully unaware of the ethical implications of supporting a totalitarian state's economy). Moreover, I was somewhat capable of reading and writing 汉语, so the Xiaomi Mi Band 2 fit the bill. I took to Ebay to purchase one, finding a listing for 10.99 USD with free shipping. I ordered it, and things were okay. That is, until the package arrived.

Read on /blog/dollar-bin-reverse-engineering.html

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