Here is a solution to those who divulge there password to someone else and find whether they are checking your gmail mailbox. This feature enable us to even sign out remotely if someone is logged into your gmail right now. If you are signing in your account from different system don’t worry the activity is logged and you can sign out remotely if forget to do so.

At the bottom of your inbox you can see the status of your last activity of your account. It will display an information of the IP address if the account is logged in some other system.

In the figure above it is showing an IP address that means your account is logged in another location. For instance let it be in my office. Click on the details link.

On the top of you can see a concurrent session information which shows the current activity of your account. You can see the Signout all other session button if some other session rather than the current session is opened. By clicking the button your remote session will be closed. Table below shows the recent activity.

We are also using OBEX protocol for receiving. In my earlier post I mentioned about the packages for send and receive. Here I am going to explain the process involved in receiving files from a bluetooth device.

For receiving a file your bluetooth is in discoverable mode. If not turn on by running the command below on your terminal.

hciconfig hci0 piscan

Now you have to listen for bluetooth connection. This can be done by running the obexpushd tool.

obexpushd -B

You should be able to receive files now. The file(s) will be saved in your /home directory. This command works in command mode. Those who hate the command mode alternate solution is to install gnome-bluetooth. Install the gnome bluetooth as I mentioned in one of the post. This is UI based tool.

We are using OBEX protocol for sending files over bluetooth. For sending files we need to install obexftp and obexpushd package. I will explain the procedure for installation first. We can use package manager apt for this.

sudo apt-get install obexftp obexpushd

Steps to send a file from your Ubuntu machine

For sending a file to nearby devices we need to find bluetooth device first. We know each and every bluetooth device(s) have unique hardware address. We need to find the hardware address first. Scan the nearby device(s). Open a terminal and type the command below.

hcitool scan

This will show the scan result as below.

This is a bluetooth device nearby. Copy the address in displayed in your terminal window. Select the file you want to send. Type the command below to send the file to your nearby bluetooth device. For instance the file name be “icon.gif” and address be “00:17:00:98:39:F2“. (The device is my mobile phone)

obexftp -b 00:17:00:98:39:F2 -p icon.gif

This will send the file icon.gif to the external bluetooth device. I will explain the process of receiving in my next post. Enjoy reading!!!