The official said the gas explosion was caused by a 'flame device' that a victim's son had been told was a propane heater.

这名官员说，天然气爆炸是由一个“火焰装置”引起，一名受害者的儿子被告知那是一个丙烷加热器。

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Noah, now 12, also prompted Rothberg to start Ion Torrent, when the son asked whether his father could invent a device that would read minds.

诺亚现已12岁，还促使罗斯博格启动了Ion Torrent公司，当这位儿子询问父亲是否能发明读懂思想的设备时。

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The hard drive ended up in the parents' possession when they packed up their son's apartment, and the mother had thought the device was a small speaker for a computer, she said.

CNN: STORY HIGHLIGHTS

"After a frightening personal experience where I briefly lost my young son, Filip, in a mall, I realized that a communications and location device for children was not a nice-to-have but a must-have, " said Sten Kirkbak, founder and CEO of Evado Filip.

ENGADGET: VivoPlay packs WiFi, GPS and a GSM connection for tracking, calling your kids (video)