Undocumented `passkey` and `loc` values in Device Data response

[donmanguno]

When I query my weather station data from January I am seeing two new keys in the data which weren't present before, are not present on my recent data, and are mentioned nowhere in ambientweather documentation. What do these fields represent?

{
        "dateutc": 1705206600000,
        "tempf": 28.4,
        "humidity": 86,
        "windspeedmph": 0,
        "windgustmph": 1.79,
        "maxdailygust": 3.58,
        "winddir": 135,
        "winddir_avg10m": 111,
        "uv": 0,
        "solarradiation": 0,
        "hourlyrainin": 0,
        "eventrainin": 0,
        "dailyrainin": 0,
        "weeklyrainin": 0.012,
        "monthlyrainin": 0.012,
        "yearlyrainin": 0.012,
        "battout": 1,
        "battrain": "1",
        "tempinf": 70.2,
        "humidityin": 39,
        "baromrelin": 30.177,
        "baromabsin": 29.3,
        "battin": 1,
        "temp8f": 32.9,
        "humidity8": 71,
        "batt8": 1,
        "feelsLike": 28.4,
        "dewPoint": 24.76,
        "feelsLike8": 32.9,
        "dewPoint8": 24.5,
        "feelsLikein": 68.8,
        "dewPointin": 44.1,
        "lastRain": "2024-01-08T19:34:00.000Z",
        "passkey": "8ac3a.....e408",
        "time": 1705190400000,
        "loc": "8ac3a2.....e408/daily/1705190400000.json",
        "date": "2024-01-14T04:30:00.000Z"
    }