Sniffer dogs and x-ray scans are normal parts of airport security.
Now, laptops and mobiles will come under greater scrutiny.
US transport officials have ordered some airports to intensify the screening of electronic devices.
If it doesn't power up, it doesn't fly, they say.
So before you take off, make sure you've charged your phone.
sniffer dogs 嗅探犬
power up 開機啟動