Please choose the correct ending to complete the given sentence: Travel: [header] How to protect your rfid enabled passport [title] Determine if your passport has an rfid chip in it. [step] If on the cover there is a rectangle with a circle and a line through it, then it definitely contains an rfid chip and can be read from a distance. [title] Decide if you want to merely be passively cautious, actively protect your data, or permanently disable the rfid chip in your passport.

Ending1: [title] Connect your passport to your computer using its usb cable. [title] Connect your ch600 chip to the chip in your passport. Ending2: [title] If you want to be cautious : [substeps] The passport cover will provide some shielding to the rfid chip inside. However, it does no good if it is open. Ending3: [step] Make a decision based on which option is best for you. [title] Contact rfid international or fight english for details on the encryption. Ending4: [step] Disabling the chip might ensnare your information in lawful situations, increasing your chances of fading off your passport online. [title] Remember you will need " full coverage of your passport ".

Answer format: ending1/ending2/ending3/ending4