Attention: Bijoy bayanno is very old version. So please buy completely latest version of "Bijoy Ekattor" or "Bijoy Ekushe" from Bijoy official site www.bijoyekushe.net
Anyone can use "Bijoy bayanno" on your PC. It can only be used at your own risk. I recommended that buy "Bijoy Ekattor" or "Bijoy Ekushe" bangla typing program. If you buy a new version with a little bit of money. You can be absolutely sure. So Although now now Try "Bijoy bayanno", later on buy the Bijoy Ekushey and use the best features.
Thank you.