Google’s Nest Hub Max ( £219) is similar to the standalone Portal.

It plugs into your TV set and works with its own small remote as well as its “Hey Portal” voice control. The version that could swing it for some people is Portal TV from Facebook ( £149), which doesn’t have a screen. (I assume grandma isn’t using Facebook now as you’d probably have tried Facebook Messenger as the most obvious option.) The drawbacks are that it involves using Facebook, it is expensive, and you are bound to have privacy concerns. You can make video calls via WhatsApp as well as Facebook Messenger, and it has Amazon’s Alexa built in. The smart cameras and tracking are far better than you get in most home speaker-type devices. I can understand the appeal of the Facebook Portal because it is designed for the job. If you have to start from scratch, try it out with someone else and find the tricky bits before involving grandma. If you can get the same equipment at both ends, even better. You’re probably going to have to do remote telephone support and the more familiar you are with a system, the easier that will be. In this case, I recommend going with whatever you know best.

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