. >> host: back to tim cook's letter, mr. zieve, we find no precedent american company being forced to expose its customers to risk of attack. for years technology experts have been warning of weakening encryption. >> guest: i don't think that is accurate there. is range of precedent requiring private companies to access private information that was private. such as credit card companies. credit card companies under all writs act there was no precedent until the precedent was set requiring those companies to turn over sensitive financial information. if you read what the motion to compel actually requires, the software that is being asked to be used to essentially turn off the booby-trap built into this phone that would destroy it upon 10 password uses, that will be held by the company the same way that the expertise to create that software is already held by the company. so, i don't think you have a marked difference. >> dig into the technology for a second here, right? at least as an initial matter, yes, i'm going to send, probab