Five channels. Every other instruction gets lost.
Radio for security, WhatsApp for announcements, SMS for the agencies, email for the record: the same instruction on four channels, complete on none.
Roomee. One messaging group per zone (“Welcome,” “Security,” “Technical”) and a Feed targeted by sector. Every message timestamped, kept, with a read receipt: you see who received it, you follow up with the person who’s missing, not the whole site. The next shift picks up the thread on arrival. The security radio stays your real-time channel. Roomee replaces the rest. And keeps the record.
"South gate closed. Use the north entrance from 6 pm."
- Reception 0/16 read
- Security 0/9 read
- Technical 0/12 read