i2 Electronics has introduced its iLockr line of anti-theft iPod security devices. The iLockr is a slide-in case made from aircraft-grade aluminum that allows users to lock their iPod to nearly any object. The Lockr features a combination lock that can be personalized, and comes in black, white, camo, pink, and green. The iLockr is available in sizes to fit the iPod nano, iPod mini, 30GB fifth-generation iPod, and 20GB fourth-generation iPod. Each sells for $40.