old saving accounts

Hello!

I have two queries:

1) I have an old saving bank accounts. Submission of PAN was not mandatory at the time of opening such accounts way back in 1996. Though the account is not dormant, meager ammount lying in it was never revealed in my IT returns. Can I have transections in this account secretly now & escape the taxman's eye?

2) One of my friends says that small investments in post-office KVP can be masked in your IT return. Is it so?

Kindly reply!

galsober