Yes, that lady is talking with her fingers.
So, unless you’ve not guessed already, these are the Bluetooth Gloves from Firebox.com and, as you walk around with your warm hands, you can answer your phone using the buttons on the back of the gloves and then, using the earpiece and microphone sewn in, you can make and receive calls.
You’ll need to charge these up before you use them, but even if not then you’ll find that the gloves are smartphone-screen friendly too.
It’s £49.99 to talk into your finger and put your thumb in your ear. It’s definitely going to raise a few eyebrows when you’re walking down the street, but perhaps no more than having a Bluetooth earpiece hanging out of your ear.