I recommend for addition of two step verification in Yaxim messenger (opensource)

Components

yaxim (Yet Another XMPP Instant Messenger) is an XMPP client with a clean user interface and open source (GPLv2). Why pay for SMS if you can have unlimited messaging on your data plan?

yaxim aims at security, low overhead and keeping your server connection open. So far, it only supports a single account.

Features:

Connection with a single XMPP server (or GTalk, or Facebook Chat, or …)
Immediate reconnection on 3G/WiFi network changes (seamless with XEP-0198)
You are asked about self-signed SSL certificates
Allows automatic connection after turning on your phone
Roster management support
Persistent message history
Message Carbons (XEP-0280)

Proposal

There are a lot of features available in the Yaxim Messenger, but I would like to improvement though. I suggest to add an security feature that is two step verification in Yaxim messenger .Yaxim has been proved to be a good messenger time by time but it is lacking a feature of security that is two step verification. I request to add it in this messenger as it is also enabled in other messengers screenshot has been taken from WhatsApp messenger which has this feature enabled:

Mockups / Examples

I suggest to put like this:

Benefits

It's benefits are only about security reasons. If you want to login or anybody is trying to login your account you will have to give more data information about yourself and otp is send to your registered number or email 📧 to verify your account. You can't simply login by using email and password. Below are things but you have two choose one of them if you enable two step verification
Personal identification Number, secondary password that can include otp's that will be send to your email address or phone number. It can be also your fingerprint too.
We know that cyber criminals are active so to protect our data from losing we should enable it.
For businesses it is more important as its very sensitive case if they lose data.
I hope you will enable it in Yaxim Messenger. Thanks!!!!!