Here is a simple way to time-lock your coins so that you can only spend them at a future date:

1) Create a new gmail account.
2) Create a paper wallet and load it with the coins that you want to time-lock. Use BIP38 and make sure you will be able to remember the password later,
at the future date.
3) Change the gmail account password to a random password. Don't write down that random password anywhere except in the following step, 4).
4) Schedule an email to be sent a future date (it's a new gmail feature to be able to schedule emails to be sent at a future date). In that email attach the BIB38 paper wallet for which you know the password and the gmail account random password, that you will not keep or write down except in this specific place.

You will receive in the future date the paper wallet with BIP38 for which you know the password and also the password for the email account that you created for this so that you can use it again. Since you don't write down the gmail password: you will need to receive the scheduled email to be able to know the gmail password again of the gmail account you created for this time-locking.

What do you think? Any questions?

- remotemass