[joeymm]

I would have a business trip for a few days,while I have to use hotel wifi for working and communicating. But there are some very important information I would need to transmit.Do you have any ideas to make it very safe when I use hotel wifi? How do you think about this software: My WIFI Router? or Connectify?

 

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I don't think either of the programs you mention is going to do what you want.  I would use a gmail email account.  They use a secure interface when you get your mail from gmail.com and you can set it up for free.  Then to make sure I would get 7-zip install it then when I want to send a file I would right click on the file and select 7-zip, Add to Archive

 

Then use the Archive format of .zip

 

and 

 

Encryption Method of AES-256

 

Then give it a nice long password which I had previously shared with the person I was sending the file to.

 

They need 7-zip on their end in order to decode it.  (Right click on the file and select 7-zip, Open Archive, put in the password and Extract the files.)

 

Practice before you go.

 

There are also programs which allow you to setup a VPN if you need to do more than just send files.

 

http://lifehacker.com/5940565/why-you-should-start-using-a-vpn-and-how-to-choose-the-best-one-for-your-needs

[RKinner]

I don't think either of the programs you mention is going to do what you want.  I would use a gmail email account.  They use a secure interface when you get your mail from gmail.com and you can set it up for free.  Then to make sure I would get 7-zip install it then when I want to send a file I would right click on the file and select 7-zip, Add to Archive

 

Then use the Archive format of .zip

 

and 

 

Encryption Method of AES-256

 

Then give it a nice long password which I had previously shared with the person I was sending the file to.

 

They need 7-zip on their end in order to decode it.  (Right click on the file and select 7-zip, Open Archive, put in the password and Extract the files.)

 

Practice before you go.

 

There are also programs which allow you to setup a VPN if you need to do more than just send files.

 

http://lifehacker.com/5940565/why-you-should-start-using-a-vpn-and-how-to-choose-the-best-one-for-your-needs