These days Bragdon uses four mobile devices on a daily basis. He still uses an iPhone for personal reasons and a company-issued Blackberry for work. He's also added an iPad, which he uses to read books and watch movies, particularly since he travels frequently. He is also using a MacBook Air for work.
Security features: Among the many features, all the devices feature password protection and the ability to be able to wipe remotely. The owner can also locate them if they are lost (provided you have downloaded the proper applications in advance). Bragdon also uses a privacy filter screen on the laptop when he travels.