Her breath caught. She wrote the coordinates of each key on a piece of paper. S (2,1), R (3,2), T (4,1), Y (5,2), M (4,0). She plotted them.
Her eyes snapped to her own fingers. The "S" was under her ring finger. "R" was under her middle—no, that was wrong. "R" was index. Her heart started to pound. She repositioned her hand. What if the sender didn't have five fingers? What if they had… six? Her breath caught
She pulled up the raw data. The signal wasn't a continuous stream. It was a rhythmic pulse, like a heartbeat. Each pulse varied slightly in duration and intensity. When she mapped those variations to a simple 26-character alphabet, she got the same sequence every time: S-R-T-Y-M. She plotted them
"srtym."
"S-R-T-Y-M," she said into the void, her voice trembling. "We see your map. But what's at the 'M'?" "R" was under her middle—no, that was wrong
She was the senior linguist at the Arecibo Deep Space Listening Post, a job that for twelve years had consisted of drinking bad coffee while the universe hummed its static lullaby. Then, three hours ago, the hum had changed.
She spread her hand unnaturally wide, imagining a different anatomy. If a being had six digits, their "home row" might be different. She mapped the letters to the keys a six-fingered hand would naturally rest on.