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In what seems like one new cloaking device being discovered after another, researchers in Spain have modeled a device that they say can prevent magnetism from leaking out of a containment container and also prevent it from being detected by an outside magnetic device.

Last month, I wrote about the EcoDog home power monitoring system , which lets you see how much electricity your house is pulling, circuit by circuit. Apart from being fun for energy geeks like me who have an insatiable appetite for data, the device lets you discover patterns in your power consumption you might never have known about and that are burning up your money. Soon afterwards, I got a call from EcoDog's competitor Powerhouse Dynamics