Invisible ink story

 Invisible ink like we can say security ink. It's a combination of chemicals that used for written secrets messages. 

Good evening everyone , today I share my views on the topic of invisible ink as a officer in a security agency. 

Now a days invisible ink is increasing crime. It's make people fool. Some days ago my friend came to a old man as a agent of insurance company. And he inspired him to signed documents then old man read the all papers carefully after that he signed. 

After some days ago another man came then he introduced himself as a staff of insurance company. After that he informed old man that he was fake and he came here to take house paper. Old man known about the reality that he was fooled him by using invisible ink. 

So be carefull always because no one is trusted. Always use light bulb, candles and juice. Some ink visible by chemical substance. 

Thank you.