When you’re carrying a ton of groceries, you just don’t have that extra hand to twist the knob to gain access to your house. Well, door knobs are a thing of the past. No Design’s Sao Paulo was obviously tired of the run-of-the-mill front doors found on every house so he designed the Max Door. Simply put, it’s a door with no door knob. What’s unique and special about it is a few of its perks:

It can be opened via remote-control device, much like your car or garage. It’s even got a mailbox built-in to the door, eliminating morning walks to fetch your paper like a dog. And to top it all off, it has retractable guillotine at the base for sound insulation. We’re hoping that it can be used for decapitating trespassers, but no word on if and when this door will be commercial.

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Cats are awesome. They kill all the rodents in your backyard, don’t need to be walked and make for a catchy Internet meme. Unfortunately, your feline could make friends with some neighborhood alley cats and before you know it, your crib has become the hot spot to be. Keep unwanted animals out with this RFID-enabled pet flap known as Spimecat.

Spimecat was designed by a veterinarian with one idea in mind: keeping unwanted things out of your house. Your cat receives an RFID implant, eliminating the need for a color, and can then enter your house at will. Don’t want the puss out at night? It’s taken care of. Spimecat can detect light levels and can keep your cat in during the evening. I don’t believe it’s readily available to consumers as of yet, but keep your eyes peeled.

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Sometimes simplicity can be king when designing a product. Case in point: The Brightdoor. A creation from the studio of Lervik Design, Brightdoor works just like a traffic light sans yellow. If the door glows green, it’s unlocked and you can enter. Seeing Red? No entrance for you!

Like many unique products, this is just a prototype that isn’t going to be implemented anytime soon. At first, I couldn’t fathom is how this door could be applied to real-life situations. Then it started to sink in. Perhaps a voting booth of some sort? A dark room for photography could make great use of the Brightdoor, keeping people out while you’re developing negatives.

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Though I decided to wear a condom, some of you may have kids and could possible have an electrical outage sometime in the near future. Am I being vague enough? Good. Because you’re going to want to scoop up a few of these Glow-in-the-Dark Doorknob Grips.

At $18 a 4-pack and made from soft latex-ish material, they’ll help your kids sleep better (no boogeymen!) and will go perfect with that solar panel lightbulb on their desk. No static electricity shocks are always a plus if your house is carpeted.

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Mr. Willy Wonka was the king of being secretive. For years, no one went into his factory and no one came out. The Wonka factory was the proverbial elephant in the room. Although his factory was gated off by iron bound bars, it couldn’t hurt to have a little extra security.

The 100% titanium alloy Defendius from the Art Lebedev Studio assures that nobody gets in, and probably never gets out, thanks to the maze you need to solve just to open the damn door. And what do you get for opening the door? Maybe nothing, maybe a lifetime supply of chocolate. — Andrew Dobrow

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Green power generation isn’t easy for large buildings. Some high-powered businesses, such as casinos and office buildings, would need a solar power grid the size of Rhode Island (the smallest state, but come on).

The Revolution Door adds a turbine to the revolving door of power hungry businesses. As people come and go through the doors, power is generated. Might not be enough to power a whole building, but could contribute to a hybrid effort. — Andrew Dobrow

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We’ve been looking at fridges lately, we know that you can grow strawberries, frost and defrost your food there, we also reported that fridge doors can open from either side. Today Hitachi is rising the bar by introducing the world’s first auto drawer for your fridge, whether you want to open or close it, close it in the middle of opening, they’re all as simple as a button press. So no more embarrassment for having difficulty in opening those drawers when you bought too much potato, no more hassle when you don’t have hands at all (use your foot to kick the button). The automatic drawers will be used on Hitachi’s top line of fridges, the first model R-W5700 with 565L of storage will be available later this month with a whooping price of 2600USD. –Sam Chan

Press Release [Hitachi]

We never understand the Japanese passion for refrigerators, they seem to come up with a lot of weird ideas that when you think about them, might be really handy. Sharp’s fridges might not be the bestselling, but they’re surely capturing a lot of attention on their fridge doors. These new 300 Liter (volume) fridges are equipped with “Docchimo-doa” fridge doors that can open from either side. As the name suggests, it almost feels like there’re doors everywhere (docchimo). This is useful when you have 30 people gathering in your kitchen, or when you are trying not to let anyone see that you’re stealing jelly. — Sam Chan

Product Page for 300L fridges [Sharp]