Micro SD Card Security?????

[bipoler#AC]

Ok so great we have a phone that enables us protection we need with various application locks and protection along with if we loose our phone they cant access any thing and the phone can be reported stolen so its no good to the crook...OK...well what about the sd card in the phone?? I tried googling to no avail is their a way we can protect them with a password so say for instance to access it you must have a password or be on the main computer i.e on my Seagate to go portal if I plug it to my computer it opens it up immediately and allows me to my encrypted folder, however even if I log on my "guest" account it will begin to open my encrypted folder yet it requires the password and I love that! SO GOD forbid anything ever happen like this my information is STILL protected as they need password to access files, has this technology not made it over to memory cards? Make me not want to use one...