Yes, through the chat apps you already carry: Heidi lives in Slack and Teams, so wherever those work, she works. Ask from the airport, approve an action from the couch, read the morning briefing on the train.
This is a deliberate consequence of meeting work where it happens: no separate app to install means no separate app to forget. Your chat client is the mobile client.
Approvals matter most here: when an agent needs a human decision, that decision reaches you in chat, so being away from the desk does not stall the work.