Posted by p.mason (545 days ago)
It seems your concerns are more about the information on the USB than the USB, itself. The fact is, whether you get the USB back or not, they have accessed and will, undoubtedly, have saved the data. I'm not sure it's a good idea to show up at the office - you are likely to be escorted out by security and there is always a risk of things getting out of hand and the police being called. There is, however, the Privacy Ordinance which might assist you. Perhaps send a letter saying they are in unlawful possession of your USB and have unlawfully accessed and processed the data and that this is a breach of the Privacy Ordinance (I have no idea if it is, but it sounds good..). Require that they make the USB available for you to collect from Security and that they delete all data extracted from it. Ask them to supply you with a copy of all personal data concerning you which they might hold. All this should give them food for thought.
(I am based in Hong Kong)