The building had changed its locks at 6:00 that morning. No one had touched a door.
From the basement office, Leda watched green squares representing each apartment. The new system changed permissions remotely when a tenant moved, lost a key, or died. It spared staff from changing cylinders while families waited with boxes.
At 8:12, the square for apartment 4B turned amber. Somebody had tried a revoked key.
Leda took the stairs because the lift was full of a florist’s trolley. A man waited outside 4B with a cloth bag tucked under his arm. He was in his forties, dressed for work, with a small cut beside his thumbnail.
“I’m his son,” he said before she asked. “Daniel Vidal. I used to come here every Sunday.”
Mr. Vidal had died on Thursday. Leda knew him from complaints about the corridor light and a lecture on sharpening chisels. Wood shavings still clung to his welcome mat.
“Your key has been removed from the access list,” she told Daniel.
“It worked last week.”
“I believe you.”
He held the flat metal tag against the reader. A red dot appeared. He looked at it as if he had been betrayed by something that used to know him.
“My father kept a blue tin in the kitchen. Small one, with a bent lid. I need to get it before my sister clears the place.”
“Your sister is the executor?”
“She is the one who answers emails.”
Leda had the authorization record on her phone. Two months earlier, Mr. Vidal had removed Daniel from the list himself. There was a dated confirmation and a second confirmation after the system had warned him he was removing a family member. The second question prevented accidental changes.
She did not show the screen to Daniel. The information was about his father’s choices, not something the machine had made public.
“I can call the executor,” she said.
“I've called her. She thinks I want the tools.”
“Do you?”
“Some of them were mine.” He adjusted the bag. “But that's not why I'm here.”
He described the tin. It had once held sweets and later kept short lengths of colored string. His father used those pieces to bind the cracked bamboo ribs of kites. Daniel had made them together with him as a child. The tin was not valuable. If his sister threw it away, nobody would notice.
Leda could imagine the tin. She did not know it was there.
The manual override sat behind a second password on her phone. She could open the door for an emergency, or with the executor's written authorization. In ordinary circumstances the system recorded a reason code. In an emergency it sent an alert to the building manager. The options were visible beneath her thumb.
“It's ten minutes,” Daniel said. “You can watch me. I won't touch anything else.”
In the past Leda had unlocked doors for people who had lost keys, slept through alarms, or forgotten that visitors were not registered. She had considered those favors part of keeping a building livable. This request sounded small enough to become another favor.
But a tenant had removed this particular person's access while he was alive. Leda knew nothing about the reason. Daniel had explained what he hoped to retrieve. He had not explained why his father stopped letting him in.
At the landing window a pigeon hopped across a ledge, dragging a length of clear packing tape. Daniel followed it with his eyes.
“He thought I was taking money,” he said. “I borrowed from his drawer. I meant to tell him. By the time I did, he'd counted everything.”
“That sounds difficult.”
“He got angry. He was allowed to get angry. But he was my father before that.”
Leda called the executor. A woman named Ruth answered in a supermarket queue. She was surprised to hear that Daniel was there, though not surprised by the request. She said she would return on Tuesday with two witnesses to inventory the apartment. She would not authorize anyone going in before then.
“He says it's a blue tin,” Leda said.
“There's more than one tin. One has the screws from his old bench, and I need to make sure nothing disappears. Please don't do this while I'm buying milk.”
Leda promised she would not.
Daniel had heard only her side of the call. When she put the phone away, he was looking down the corridor at the fire-safety notice.
“She said no?”
“She'll come Tuesday. You can ask to have the tin listed for you.”
“And if she says no then?”
“I can't promise she'll say yes.”
He laughed without much amusement. “That's the nice thing about this door. It doesn't have to explain itself.”
His father had revoked access, and Ruth would not restore it. Leda nearly explained the difference. It sounded too much like taking a side.
Instead she took out the maintenance notebook she carried for small jobs the software didn't accommodate: a rattling vent, a staircase bulb that hummed, a tenant who asked for a second name on the intercom because her mother could not read the first.
“What exactly should I tell Ruth to look for?” she asked.
Daniel considered the question. “Round tin. Blue with a white stripe. It has a dent where I hit it with a hammer. There should be a bit of yellow kite string inside.” He stopped. “Unless he used it.”
Leda wrote it down. Then she read the description back, so he could correct the color of the stripe.
She offered to add his phone number. He said Ruth had it already. He stood another moment outside 4B, not trying the key again, and went down the stairs.
Back in the office, Leda attached the note to the executor's inventory request. The system asked her to classify the failed entry. She chose NO ACCESS — PRIOR REVOCATION, then added a free-text note directing the manager to the pending request. She did not select the box marked RESOLVED.
When she went upstairs at noon to replace the corridor light, the pigeon was gone. The tape remained on the ledge, held under a flake of old paint. Apartment 4B's reader glowed green again, ready for the people who were allowed inside. Leda tightened the light fixture and left the notebook open beside her toolbox until the ink had dried.