Default printer settings

I have never paid much attention to setting default printer, normally setting it to the most commonly used printer for convenience sake. However, a reason episode made me think twice on whether it is wise. Recently, while using my hybrid laptop in school, a dialog popped up and disappeared ...

Problems with FTP

1) No copy feature. There is no way to duplicate the file the file on the server for backup, testing or any other purposes. You have to download the file and upload it to another location, which is quite a hassle especially for large number of files. One would think that this is a common ...

Hiding compressed files in images

Have been doing this for quite some time, just wanted to share the method. The following code should work on Linux/Mac. Step 1. Zip/Rar/7z your secret file zip hideme.zip s3cr3t Step 2. Append the zip file to a random image file cat hideme.zip > randompic.jpg Thats all. When you open the jpg, ...

Hijacking QR codes

Just finished printing my poster for a school project in which contained a QR code for users to download an android app. It was my first time printing out 300dpi@A1 size and thankfully it turned out well (A reprint would have cost $12). Anyway, that is beside the point. More importantly, the QR ...

Interesting bluetooth experiment

Earlier on, I paired my bluetooth keyboard to both my android and windows OS dual boot configuration. It is a hassle to keep re-pairing the keyboard whenever I switch OSes. This was done by pairing it with the android and extracting the link key, which is a 32bit binary code and then replacing ...

USB 3.0

I changed my workstation just recently from an old, heavy Lenovo with 2 hours of battery life to a new Acer W700 hybrid that is half the weight and has roughly 7 hours of battery life. Chief among the differences include only a grand total of 1 USB 3.0 port on my W700 as well as 64GB SSD ...