I find this statement to be seriously flawed in general. I agree that the average slashdotter at this point seems top be a middle-to-high income white person (most likely male by all the "reverse-racism" posts), but the statement that this group has no idea what the real world is like.

I have spent parts of my life in Section 8 housing where I was the only white person in the building. I've worked at inner-city schools where the IT department was the only department with white people working. Racism still exists, though it is definitely not restricted to white men. Black men and women are racist too, so are hispanics, and while working in said inner-city school I found out that Black older women are more racist (especially against hispanics) then any other racial group I had the chance to work with. Everyone builds prejudices of some kind, it is how our minds work. We look at people and put them into groups, and it takes extreme willpower not to do this and I commend anyone who is capable of not judging any groups on stereotypes.

That being said, I would not say the world of section 8 housing and racism is the "real world." It is a world that is different from the world lived in by white middle class suburbia but that does not make it any more or less real. Hell, if you want to say white middle class people don't know what the "real world" is like because they don't see racism, then poor blacks don't know what the "real world" is like because they did not survive the holocaust, ad infinitum. There is always a group that got dealt a better hand, and there is always a group that has it worse off; this does not in any way invalidate the experiences or lives of the group that was dealt the Full House.

Others have commented on this, and given the amount of work and funds that the subject from the article put into the house I'm sure there is more to opening the door then just the RFID signal. If the entire house is controlled from through a touch interface, it would be trivial to write a script which could send an encrypted message to the door to open, and the door will only run the 'unlock' command if the RFID tag is in the vicinity. I'm probably not explaining this well, but makes sense in my head. SSH into whatever server is running the lock software, give unlock command, door checks for RFID signal and unlocks. Need to both run the command and have the RFID signal to open it up. Least that's the way I'd do it.