urn:uuid:f5ad19ad-12e9-5bf6-9de6-09e306172789 Topic: Bluetooth – Ctrl blog Daniel Aleksandersen https://www.daniel.priv.no/ Copyright © 2021 Daniel Aleksandersen. https://www.ctrl.blog/assets/logo/logo-square.svg 2021-04-21T02:01:00Z weekly 10 urn:uuid:a2ea9845-2a66-46fb-9978-66f7b816499f 2019-07-28T04:41:00Z 2019-07-28T04:41:00Z Bluetooth privacy and the FreeStyle Libre 2 glucose monitoring system The FreeStyle Libre 2 can push critical glucose level alerts to your phone. Great for managing diabetes, but it also makes you trackable out in the world. <p>I’ve been using the Abbott FreeStyle Libre 2 flash-glucose monitoring system for the last two months. The system consists of a glucose sensor attached to the back of the upper arm; which lasts for up to 14 days before needing replacement. You can then scan the sensor using a dedicated reader or an NFC-capable smartphone app to get current and up to 8-hours of glucose-trend readings.</p> <p><a href="https://www.ctrl.blog/entry/freestyle-libre2-ble-privacy.html">Read more …</a></p> urn:uuid:15e59345-17da-4ebc-ad13-f3132bafbfc4 2019-07-25T02:50:00Z 2021-04-21T02:01:00Z How to test if your Bluetooth devices support BLE Privacy Some Bluetooth Low-energy (BLE) devices support the BLE Privacy extension that makes their location harder to track. How to test if your devices support it. <p>Legacy Bluetooth devices and newer Bluetooth devices that haven’t implement privacy-protections broadcast a persistent identifier that’s unique to each device. These broadcasts usually happens several times per minute. Retailers, transportation providers, and others have been recording these broadcasts for years and use them to track people as they move through public spaces. A persistent identifier even allows them to map your whereabouts and habits over time.</p> <p><a href="https://www.ctrl.blog/entry/tutorial-test-ble-privacy.html">Read more …</a></p> urn:uuid:eca10cee-3e37-4876-956e-4942ae01b38c 2019-07-07T01:08:00Z 2019-08-04T21:15:00Z Feitian MultiPass recall highlights need to use multiple security keys The recall of the Feitian MultiPass FIDO security key demonstrates why you always should use multiple security key products from different vendors. <p>You may remember that I picked up a couple of different security keys last year and wrote about Firefox, Security Keys, U2F, and Google Advanced Protection. One of the keys that I got, the Feitian MultiPass FIDO Security Key, was recalled in May 2019 over a security issue.</p> <p><a href="https://www.ctrl.blog/entry/feitian-multipass-recall.html">Read more …</a></p> urn:uuid:4eeff81a-598b-4d3d-a2f0-00f7989bd1f3 2018-10-11T02:21:00Z 2018-10-11T02:21:00Z Contour Diabetes app, Bluetooth, and why we can’t have nice things The Contour Next glucose monitor and its companion app communicate with each other over Bluetooth. Well, they try to anyway. <p>I thought my new Contour Next One glucose meter with a companion phone app would work like a modern connected fitness tracker and give me convenient access to my blood sugar levels. It ended up just being more busywork.</p> <p><a href="https://www.ctrl.blog/entry/contour-next-one-bluetooth.html">Read more …</a></p> urn:uuid:5b9a13e1-3768-4ecc-bfd7-de8032d04992 2017-01-10T09:42:00Z 2017-01-10T09:42:00Z Thoughts on Bluetooth 5 and the device pairing user experience How come every Bluetooth device is so different? Do you shake it? unplug batteries? hold a button for two–ten seconds? This needs to change. <p>I’ll go as far as to say that <em>I <strong>hate</strong> Bluetooth device pairing!</em></p> <p><a href="https://www.ctrl.blog/entry/bluetooth-device-pairing.html">Read more …</a></p>