Apply Watch Unlock / DisplayLink / Screen Sharing

paultzirides · 10-26-2018, 02:48 PM

I checked into this a number of months back - this is an issue that manifests with any third-party display drivers (Duet Display, Air Display, DisplayLink, etc.). The basic idea is that these USB-based solutions can be insecure, or, if coming from a disreputable developer, can intercept the secure communication between the Mac and Apple Watch, which would compromise security for all Apple Watch users. If a malicious actor can reverse-engineer the way Apple securely authenticates and unlocks the workstation, they'll have the keys to the kingdom. To mitigate this, Apple prevents this function from working completely when any third-party USB-based display is connected.

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10-26-2018, 02:48 PM	#6
paultzirides Member Join Date: Jun 2013 Posts: 50	I checked into this a number of months back - this is an issue that manifests with any third-party display drivers (Duet Display, Air Display, DisplayLink, etc.). The basic idea is that these USB-based solutions can be insecure, or, if coming from a disreputable developer, can intercept the secure communication between the Mac and Apple Watch, which would compromise security for all Apple Watch users. If a malicious actor can reverse-engineer the way Apple securely authenticates and unlocks the workstation, they'll have the keys to the kingdom. To mitigate this, Apple prevents this function from working completely when any third-party USB-based display is connected.