How To Limit Access To A Telegram Bot

Question

When I send a message to my Telegram Bot, it responses with no problems.

I wanna limit the access such that me and only me can send message to it.

How can I

Answer 1

Filtering by update.message.chat_id works for me. In order to find your chat id, send a message to your bot and browse to

https://api.telegram.org/bot$TOKEN/getUpdates

where $TOKEN is the bot token as provided by BotFather, as mentioned in the answer by fdicarlo, where you can find the chat id in the json structure.