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A comment on Shimano Forces Hammerhead to Remove All Di2 Related Functionality From Karoo. Parent comment

Re:Shimano Forces Hammerhead to Remove All Di2 Related Funct... by MezzoDelCammin on Friday June 03, 2022 @04:12AM (#31605590)
Well, if it feels petty, it's because it is.

The "data" You're talking about is basically just battery level and which gear are You in.

Just for context, SRAM (the second biggest component producer and the new owner of Hammerhead) publishes the same data in plain ANT+ format. It's basically an open standard over which sensors broadcast their data. Anyone who is interested can read it, no license agreements necessary.

AFAIK Shimano has decided to encrypt their packages and the license is for the encryption keys / algorithms.

[ Parent | on HN ]
Re:Shimano Forces Hammerhead to Remove All Di2 Related Funct... by nradov on Friday June 03, 2022 @10:40AM (#31608938)
Technically you do have to agree to the ANT+ adopter license agreement in order to access the specifications. But it's free and available to everyone.

https://www.thisisant.com/business/go-ant/levels-and-benefit...

[ Parent | on HN ]
Re:Shimano Forces Hammerhead to Remove All Di2 Related Funct... by dachryn on Friday June 03, 2022 @10:18AM (#31608626)
so one of the future firmware updates will just be to rotate the encryption keys out of spite to make sure it doesn't work anymore.

What a time to be alive /s

[ Parent | on HN ]
Re:Shimano Forces Hammerhead to Remove All Di2 Related Funct... by nradov on Friday June 03, 2022 @10:42AM (#31608969)
That would be difficult given the very limited compute power on the sensor devices involved.
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