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Xfinity using WiFi signals in your house to detect motion

xfinity.com

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Re: Xfinity using WiFi signals in your house to detect motion

#91
Put your cable modem in bridge mode and use your own WiFi.

I used to recommend using your own cable modem as well, but these days you have to use the Xfinity modem to avoid overages if you're in a market with data caps.

Comcast has a stellar network operations unit, but their business operations are creepy and exploitative.

Re: Xfinity using WiFi signals in your house to detect motion

#93
post #13

Earlier quoted context omitted.

Don't they hand out combination modem/routers? What's a cheaper alternative?

Buy your own DOCSIS modem, opt out of renting theirs. It'll pay for itself after a few billing cycles (the modem rental fee is $15 per month)

Wow, what a deal. Last I looked it was $5/mo. Spectrum doesn't give you any discount at all.

Still I thought a good DOCSIS 3.1 modem would be a few hundred.

Re: Xfinity using WiFi signals in your house to detect motion

#94

Xfinity won't give folks in certain locales (maybe everywhere in the US?) unlimited bandwidth unless they use their modem/router. This seems like a good reason that practice should be illegal.

I use a cellular connection for my internet, but my apartment building is wired with Xfinity, and probably 90% of people use it. Naturally, there is no way for me to opt out of this.

Does your apartment lease require that you use Comcast's hardware? When I signed up for Xfinity years ago I wanted to use my own hardware (NetGear cable modem, Buffalo Airstation with DD-WRT). I forget now whether I had to walk through the activation over the phone with a tech - I vaguely recall having to provide some information about the modem, which was one of the models listed as supported on their use-your-own-hardware web page - but the whole thing was easy.

Other people have mentioned that not using Comcast's stuff means that certain features won't be available, but I don't care. I don't have huge bandwidth needs, for instance.

Re: Xfinity using WiFi signals in your house to detect motion

#95
post #13

Earlier quoted context omitted.

Don't they hand out combination modem/routers? What's a cheaper alternative?

Buy your own DOCSIS modem, opt out of renting theirs. It'll pay for itself after a few billing cycles (the modem rental fee is $15 per month)

I did this recently and found out Comcast considers some security feature that runs only on their hardware to be part of the bundle they sold us.

So, bringing your own modem gets rid of the rental fee, but requires moving to a different plan without the security feature bundled. This is of course more expensive, almost entirely negating the savings of bringing your own network equipment (I think our net savings is $5/month, which means its going to be a couple years to pay back the modem cost).

Re: Xfinity using WiFi signals in your house to detect motion

#96

Earlier quoted context omitted.

It doesn't require IPv6. The modem is just as aware of all the private IPv4 addresses on your network as well as all the public IPv6 ones. Unless you put your own gateway (layer 3 switch, wifi ap, linux router) in front of it.

That would require Comcast to have access to your router, or more precisely, the NAT.

For most people their Comcast modem _is_ their router.

Re: Xfinity using WiFi signals in your house to detect motion

#97

Earlier quoted context omitted.

If you don't broadcast your SSID, then how can device manufactures have hyper accurate location services available when GPS is not? You're not participating in the system! Hell, as much money as theGoogs gives to be the default search to various companies, would they not be willing to pay ISPs to keep that option on? I'm just throwing ideas out that I know nothing about, but I don't see why they would be opposed to t…

Doesn’t turning off SSID broadcast result in devices that have the wifi network saved repeatedly broadcast a request for the AP to identify itself in an effort to establish a connection?

They do that already... sum of all privacy losses.

Any time you go out in public your devices are crying out looking for your home AP. If someone can figure out which are you, e.g. by seeing you multiple times in different places they can then go look up where you live based on your home's SSID broadcasts.

Re: Xfinity using WiFi signals in your house to detect motion

#98

Earlier quoted context omitted.

That would require Comcast to have access to your router, or more precisely, the NAT.

For most people their Comcast modem _is_ their router.

The point of the comment about ipv6 is that if you don't use a Comcast modem/router or they're prohibited by law from snooping on that, Comcast can still sorta understand the number of users from the outside by looking at your ipv6 addresses.

Re: Xfinity using WiFi signals in your house to detect motion

#99

Earlier quoted context omitted.

The point is every single thing I own should be "on my side". My car should not store my location history. My wifi router should not track presence and movement. My printer should not add any watermarks or telltale dots. My stuff should actively make it difficult or impossible for hackers, advertisers, or law enforcement to recover any useful information. This means, respectively: ensure personal info is stored secur…

This is magical thinking, because it’s using the legal system to solve a technical and social problem. It’s probably possible to create standards that don’t leak PII and other forms of metadata that are unique. That is probably the only solution going forward to reduce possible interdiction by extralegal third parties. However, Comcast can only be enjoined from doing this legally, and will likely not do anything that…

You seem to think that it would be impossible to instruct Comcast to implement on/off for the feature? That's the sort of thing that the legal system is for.

Re: Xfinity using WiFi signals in your house to detect motion

#100
post #69

Earlier quoted context omitted.

I'm doing the first bit, but I can't turn off the wifi -- only stop broadcasting my "personal" network. And actually, as I went in to make sure that was the case, I saw that broadcasting of my personal network had been forcibly turned back on. Lovely!

If you cannot disable it and you don't trust the wifi but need the service, wrap the isp provided box it in aluminum foil and ground that foil ( no need to try to solder on the foil, an alligator clip is more practical), the wifi will still be on but it will be completely blind. Just make sure it doesn't overheat.

These are the comments I come to HN for.
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