Dept.: Maxed Out
Tech: Pet Gadgets
Cost: $1,840 plus dog
Steal | | | | | Splurge
 Too tired to let the dog in? The Staywell Infrared Locking Dog Door ($185; smarthome.com) opens automatically when a small fob on your dog´s collar beams a unique code to an infrared receiver on the door.
 Speaking of not getting up, skip the walk and put your pooch on the Jog A Dog (starting at $1,100; jogadog.com), a canine treadmill that comes in three sizes and goes up to 10 miles an hour.
 And for the truly lazy, the Petsafe Automatic 3 Meal Pet Feeder ($50; vpetgadgets.com)
dispenses kibble every 8, 12 or 24 hours. It can even play a recording of you calling the dog to dinner.
 For owners who do venture outside with their dogs, the Viatek Glow Leash ($30; viatekproducts.com) doesn´t glow much, but the handle´s dual-LED flashlight is just enough to illuminate the sidewalk ahead.
 Vets may disagree over whether your dog needs anti-fog, shatterproof UV eye protection (with interchangeable lenses), but c´mon: Doggles ($25; doggles.com) are pure prop comedy.
 Much more practical is the GlobalPetFinder, a GPS devicethat attaches to your dog´s collar. Set virtual boundaries and receive a text message or e-mail when he crosses them, or dial f-o-u-n-d on your cellphone to get his location anytime ($350 plus $18 a month; globalpetfinder.com).
 A cheaper way to find lost pets is simply to have your vet implant a rice-grain-size RFID microchip, such as the one from HomeAgain ($60; homeagainid.com), under your dog´s skin. If a shelter recovers him, workers can read the chip´s ID number with a handheld scanner and fetch your address from a database. Next up: a chip that also lets you read your dog´s temperature-the best indicator of his health-with a home scanner.
 The Dog-e-Tag ($40; dog-e-tag.com), a digital collar tag that can hold up to 40 lines of text, including name, address and dietary requirements, may be too geeky-it took me 20 minutes just to enter my dog´s name.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.