IDK, I have multiple friends that use my Fox Sports login to watch Brewers/Bucks. One tries my charter stuff on everything where you need to show that you have cable and it works.

The funniest part is that I actually got rid of Charter in November and the logins still work. I have internet another way now and am still able to login to the Charter app and watch everything for free. I'm going to keep riding it for free as long as I can just to spite them, even though I hate not just having normal cable. 3 months so far.[/quote]

My dad has Spectrum and when I try to use it, what I described happens. I can watch Hallmark Channel but it will not allow me to connect to Spectrum live without being on their network, i.e., in their house.[/quote]
You wouldn't be able to use the Spectrum TV app but you should be able to use 3rd party apps like Fox Sports Go, ESPN, TBS/TNT, etc. Many networks offer their own app. As long as those channels are part of the original cable package you should be able to log into those using Spectrum credentials.

For context, I believe the Spectrum TV app is a way to access your cable subscription without needing to use one of their cable boxes. Say you have 4 or 5 TVs in your household, having a box for each of them would get pricey, so you could use the app instead to cut down on the box fees. It's only intended for use at a customer's home.[/quote]
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Yes that is what Spectrum TV app is. It's designed as a way for you pay for it on one TV but then have access to all your other TVs(so you don't have to pay 15/month for each box). As I said though, I currently watch the Spectrum TV on my smart TV using other internet and it works fine and has been for 3 months since cancelling. Chances are this is just due to not logging out and wouldn't work if say I just gave you the details now and you tried it on your TV.

And as you said, using your Charter login to access FS Go, ESPN etc worked for several other people off mine for years with no issue. No one ever tried the Spectrum App so IDK. I know for one of them it has since stopped working once I cancelled but I'd guess he logged out and couldn't get back in. Others it's still chugging along. If you lived wherever and had a friend paying for cable here I'd be really surprised if you couldn't log into FSGO using his login. I do have a friend's info as a backup if/when mine stops working, I got it because I thought I would get cut off, so I guess I'll know more if/when I ever have to try it. But that reminds me, I gave that login to the other friend who's stopped working from mine and it worked for him no problem.

For sure, I'm frankly shocked it's gone on this long with everything such as Netflix, etc. It's been a running joke for years how everyone uses each others logins and they've done very little to counter it. It's only a matter of time.