WhatsApp is great for quick communication.
But a word of caution is in order: Please never share sensitive data, such as an invention description or photos of it, via WhatsApp. There are better and safer channels of communication with me.
Some precautions I take when doing this are: 1. my contacts are not shared and synced. 2. photos I receive are not stored on my mobile devices. 3. I keep my mobile devices up to date with updates. 4. messages you send me delete themselves after 24 hours. 5. cloud backups are disabled.
Patentanwalt. European Patent Attorney. European Trade Mark Attorney.