I recently wanted a 2GB card for my SE800i and went to the "imported goods" shop to have a look. The damn-low prices made me have a look online for distinguishing a fake & an original. They look so real that even supplier can't make out the differences. eBay has a useful guide on the same. Anyway... these tips will tell beginners on spotting the fake SONY memory stick pro duo products. The Prices The prices of fake MS Pro Duo are very cheap at retail shop...usually ranging about 1800/- for a 2GB one. Seals Original Sony Package Seals have Long Staple like Seal, and it is sealed in using heat. Fake one have round seals, and the seals are sealed up using glue. The metallic stripes, also call the connectors, for fake one... should have black holes seen on the metal stripe as the metal stripe did not cover fully, and this happen the most common on the 1959mb version and the 1948mb newer version. The original one is fully covered to the bottom without showing any incomplete-ness. Capacity Fake 2GB MS Pro Duo have 1948MB and 1959MB of memory space when it is shown on devices like PSP. Genuine one have a capacity of 1909MB while some devices will read 1910MB. Transfer Speed The transfer speed of real one is at about 80Mbps. Fake one will have slower transfer speed. 1948MB one actually can go on 65Mbps to 70Mbps... 1959MB one ... at most 60Mbps. Test it by transfering a 1GB file to the stick and check out the time taken for the transfer. Size Fake MS Pro Duo is thicker than original one. Try fitting it into an adapter, and you will find that the fitting have problems. It doesn't seems to fit into the adapter.. (feel like squeeze it in). The newer fake version even have problems fitting into PSP.. as reported by Sony as the memory stick is stuck inside the PSP. (newer one are the 1959mb versions) Prints The words carved behind the Fake MS Pro Duo card is printed on... while the original is engraved into it. The know if it is printed on or not... just use your thumb to feel it. Fake one.. u feel the wordson it.... the original one u can't feel them. Package The Fake package.. actually looks a lot like the real one. Even the hologram looks real!!! Maybe the most visible one, when compared side-to-side, is a higher red tinge on the fake one. Also, on the side of the package there are 4 pictures. In some packages, the pictures are not in a straight line!! On the back of the package... look at the black printing.. on a fake one... u will see white spots on the black part of the printing. Good quality printing by sony will show that there are NO white spots! Also... insist on a warranty card if u r getting sandisk one... for the 5 years warranty. Sony one i'm not too sure bout the online warranty status... but keep the receipt!! if u discover that it is a fake one... bring it down to SONY with the receipt!! __________________________________________________________________________ Well, guyz, I bought a fake 2GB MemStick recently. It seems there r 2 types of fake products now. Both easily distinguishable by their round glue seals. I heard that the 1GB fake cards don't cause probs. The old 2GB one hangs the phone frequently. The new model (one in white) is more stable, i heard. Note:The new one is white in color. The cover too has no red tinge. Looks REAL. Only the price (a kool 1600/-, the original 2GB one costs a bomb.. 3k @ rediff - 4.5k showrooms) & a hologram difference made me believe it's fake!!! Pics: Courtesy Sting, the old 1GB one (looks same like the 2GB) Courtesy KoolBluez, the new 2GB one, picture is enlarged & highlighted @ detection zones Check out the round glue seal (original has a long thermal seal), fake hologram & lower quality print on memory stick. Common for all types of fakes. Old or new.