杰夫.卡干说：“ATM卡比移动支付风险高，当ATM刚问世的时候，人们都很担心，现在我们天天使用。
"It is no riskier than using an ATM card, " Kagan tells CNBC.com. "When ATMs came out everyone was worried and now we use them every day.
除此之外，所有儿童每天使用移动设备的时间也增加了两倍，从5分钟增至15分钟。
Moreover, the amount of time all kids spend with the devices each day has tripled, from 5 minutes to 15 minutes.
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