I use a Roku at my Air BnB rental cabin in guest mode. Recently, a guest downloaded the Spectrum app. Because the Roku device is connected to my Spectrum internet, the app automatically signs in to my Spectrum account. As a result, the guest was able to add services to my account which ended up costing me several hundred dollars.
Spectrum confirmed this is how the app works, and that there is no way to disable it. They also do not have a feature allowing you to disable account changes from the app.
I realize this is a niche use case. The solution from the Roku side would be some sort of blacklist or parental mode that blocks guest users from downloading the Spectrum app. For now we will stop using guest mode and look at other streaming devices, but anyone using guest mode on Spectrum should take heed: guest mode users will have access to your Spectrum account via the Spectrum app.
