joanna stern >> thank you, guys we're all going to be taking shots. t joanna used the term walled garden. i know she did her piece for the wall street journal, the walled garden i have to come back to you on this is it fair to call apple walled garden the verge brought out it's turning into a carrier that's pretty strong what did you make of that? >> totally fair. it's a walled garden but apple would argue there's a big open gate in that garden and you can leave if you want to and go into android land but why would anyone ever want to leave think of it more like the disney world or disneyland style walled garden where you've got to paid a lot to be there, but apple would argue it's the happiest place on earth >> yeah, but i mean, who wants to leave a garden? people may feel differently about carrier. so interesting language being brought into the conversation there. >>> coming up on the show, jeff bezos heads to space bitcoin takes one step closer to becoming legal tender. and somewhere in twitter rethinks the follow, "tech check" is just getting start

here, julia boorstin, kristina partsinevelos and joanna stern first topic, is twitter unveiling officially first-ever subscription service? they are kulg it twitter it is the inverse of what i thought they were going to be doing. they are aiming a the power users to pay up. i thought they would aim at the regular users to pay for access to the power people. but there are cool tools it starts in australia and canada, right? >> that's right. it will be roughly u.s. $3 a month, and australia and canada. we don't know how much it will cost in the u.s. or when it will launch in the u.s. to your point that you expected them to do something different and have the regular users pay for maybe more content from the power users that is something that could come soon as well i think the key thing here is they don't expect this to be the future of twitter. they know it is going to be a smaller percentage of twitter users that are willing to pay a monthly fee for something we all associate with being a free service. but it shows twitter making headway towards having multiple revenue streams. >> shares u

mail without the new technology, it's on pace to hit more than 52 billion by the end of the year joanna sternlogy columnist for "the wall street journal" and a cnbc contributor. joanna, how does this actually work >> you mean how does stir and shaken work? but not in a margarita as you're probably wondering on a hot night like today so you -- you nailed it. it's basically technology that helps prevent spoofing and what spoofing is, is some of these robocallers use technology to look like other phone numbers. so, you get a phone -- you get a phone call that looks like a familiar number or a similar-area code to you and this technology has to be implemented at the carrier level. so, the cellular carriers. maybe, your voip provider, your internet voice provider. today was the deadline for them to implement this technology. >> the fcc's been trying to fix this problem for years but it just keeps getting worse is it your estimation that this will really make a difference? >> not really. i -- i feel so badly to tell you that and all of your viewers that it should help but look at it -- i look at it