Inside a Google Titan Bluetooth security key
Disassembly of a Google Titan Bluetooth two-factor security key .
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The Google Titan security key
Here is the key before disassembly.
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It split open easily
The key succumbed to prying very easily.
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The circuit board
Here's the complete circuit board, which is not held inside the shell in any way, so if it breaks open, the guts fall out completely.
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Peeling back the battery
The battery is stuck down onto the circuit board using a sticky pad.
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Close up of the board
Here is a close up of the chips underneath the battery.
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The battery
The battery is a 35mAh 3.7W lithium polymer pack
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Top of the circuit board
On the top of the chip is the main tactile button and a NXP QN9021 Bluetooth LE chip.
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Bluetooth antenna
If you look closely you can see the track for the Bluetooth antenna between the chip and the battery.
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Water test
The circuit board survived a quick dunk in water, but the long term durability with regards to water or more aggressive liquids such as sweat or seawater doesn't seem good.
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