Don't be the stooge asking which way he went...
Smaller than a cell phone.
Spark Nano 4.0 GPS Tracker
Smaller than a cell phone, the Spark Nano GPS tracking device is ideal for small business owners, spouses, parents, and anyone else who needs to keep track of what they value most. Loaded with features, this battery-powered GPS tracker gives you real-time location viewing from the comfort of your computer, tablet or smartphone; and there are no expensive apps to download. The Spark Nano's fully rechargeable battery can run for two weeks or more under normal use (~1 hour a day), and with motion-activated tracking, you won't waste any battery life when your target isn't moving. This GPS tracking device's weather-resistant body makes it more versatile than comparable trackers.Inexpensive, compact, common looking and packed full of useful options..
Would come in mighty handy when scouting a target.