Locked out...

Got woken up at 11 pm to have breakfast. Chatted with Sat & Meg, who are leaving today morning, for two hours. Said goodbye, headed to the lab. Dropped keys on the path. Couldn't find them. Didn't have a torch. Cellphone light wasn't enough. Fetched camera, and took pictures (with flash) of the path to analyze for keys. Didn't find them. Went home, read stuff, waited till daybreak. Found keys. They'd dropped further on from where I thought they'd dropped - I'd not been photographing the right place.