great first day designers.. i know this is a harder design when having to keep similar to an existing one. a good variety are definitely coming through. just a few notes; if the first is going to be used, definitely try and keep it consistent with the original design, as any association should show that there is a direct relation between the two is important.. same goes with font. however, we can think outside the box.. that association doesn't have to include the first always. what about the aspects of security? integrity (trust), authentication (credentials), confidentiality (security), non-repudiation (certification) and the aspects of dealing with low powered micro-controllers... still a bit of time left with the ideas phase.. i've moved similar aspects away for now; but in the finalists phase some may come back - so, do not feel your logos have been rejected.. i just want to emphasis in the initial stages variation is key. so far, only a few have been "oh .. nope" - the rest are all great entries.