CAVEAT: NO TERRORIST SOLUTIONS
(Obvious answer to any new tech that destroys stuff is "use it for extortion." That cheap trick won't get rewarded here)
I have a device similar to what Douglas E. Richards' used in Split Second such that any object of less than 3 m3 size can be sent back up to 0.5 seconds in time. When it does, it exists before it leaves so for that split second there are two of them. It's a "Telecloner" which teleports something by sending it back in time, making a temporary clone form in the "destination" time in the past, until the "origin" time in the future. See the diagram:

- Mouse A exists.
- T2 = 0.5 seconds before the mouse A is teleported. The mouse A appears in the teleported location
- T1 = Mouse A vanishes from the teleportation area (It is not "destroyed" like a Star Trek transporter - it traveled back in time)
- Mouse A exists in the teleported location alone, original mouse sent away.
To visualize this better, Imagine a Star Trek transporter which “beams” you 20 meters away except you materialize 0.5 seconds before you dematerialize (yes, that means you are at your destination only slightly before you say “energize”)
Earth's travel dictates that up to 3 times per day, anything up to the size of a microwave oven can be teleported between 5 and 50 feet away by sending it back in time up to 0.5 seconds. The machine must be stationary, but it is installed anywhere you want (a bank, office building, garage, back of a truck, port-O-potty, etc. and can teleport anything inside a safe, a drawer, room, garage, etc.)
Hard science in the plot dictate that it can't to scale up. It operates by anchoring the small region in the scalar Higgs field, until the link between the machine and the space is broken.
- An Object in a defined spatial region of 0.5 m$^3$ can be targeted from up to 3 feet away in open air. The region can be any ovoid region, or can be sculpted into a loose rectangle as well, limited by volume rather than linear dimension. Larger objects up to 3 m$^2$ can be telecloned only by using a special chamber, which can fit in a van. A person could be done with tremendous risk and has not been tried.
- You can’t choose the destination: Where the item appears depends on the time and date. Why? The object does not actually move, but the earth and universe do, so it appears wherever that point in space was a split second ago. Simply put: It works by merely freezing the object in the timestream, while the earth (universe) continues to clock forward (and in every other dimension). The distance is determined by the movement of the earth, thus the operation limit.
The list of things you have successfully telecloned is as follows:

Of this list, I am experimenting with which item may be the most profitable.
Here's what they've done so far:
- A wallet with a fake ID (and a driver license, a key, a credit card, and a contract in it) was transported into a government building. They entered the building as a contractor, then picked up the government ID once they passed security.
- Yeast was multiplied several times to quickly make beer.
- A mouse was transported into a sealed Schrodinger Cat box, with the cyanide trap. To see what would happen. The mouse was alive.
- A signed check was put into the car from the house. It was cold outside.
- A camera took a picture of a virtual Lotto machine as it stopped, a Web bot quickly typed in the winning number. The collection was closed 5 minutes before the drawing, but the robot got the right numbers.
- A cheap parlor trick: A special unique coin was shown to some kids, put into the machine, and the kids found it in the freezer 20 seconds later. Never stopped talking about it.
- A piece of the granite kitchen counter (a mineral) was transported into the yard, leaving a nearly perfect hole in the granite, and a nice big round granite coaster.
- A jewelry box (with diamond and heirloom) was removed from a safe (with a sliver of steel with it. Oops.)
- From the back wall of a pharmacy late one night, a random assortment of medications was telecloned out to the parking lot. With some shelving and an employee's RFID card. And other stuff.
- A transmitting walkie-talkie radio was telecloned into the trunk of a stranger's car and recorded until the battery died. The stranger was a cop, and the walkie-talkie had fingerprints on it, and became evidence in a very strange wiretapping case.
- A lit propane torch was telecloned into a large 50-gallon residential propane tank. It was one of the few experiments that went as planned.
- A video camera showed a bullet hole in the wall next to a target in the hall. This was just before, outside the house and 20 feet East, a target was shot at in the yard. The bullet passed through a laser line to trigger the telecloner. Nothing hit the target in the yard. The bullet moved 20 feet West, and 200 ms earlier.
Concepts to consider:
- An exothermic chemical reaction sent backwards would double its heat output.
- A radioactive source could be used to double its radiation for that time.
- A breeding culture of cells/bacteria could rapidly populate.
- Any bomb could be doubled, but the telecloner will be destroyed as well.
- Any small object could be teleported through any material, for that short distance. Into a safe or vault, for example.
Q:
From the list provided, what would would likely be the most profitable thing to send back? Please help by including your reasoning in the answer.
- Note: Discussion about paradoxes should go to chat first. There will be dangers and faults in every answer: perfection is not sought, the question asks only for cold, hard, likely unethical, profit.
Concieved implications / Paradoxes: There are horrific implications to this as essentially the "clone" which goes to the past can emerge inside a solid object if the timing is wrong, like Star Trek transporters. In this case, it would be quite horrible. You could literally watch yourself become transported into an object before you disappear. But weaponizing it can be a side arc for some entity who doesn't know how unpredictable it is. The weapon will fail horribly if they try—you're only 50 feet from the blast!
This technology avoids the Grandfather Paradox, it's still the current you that dies (not the past you). For that instant you are a clone.
A Causal Loop paradox is used because it is easy to shut down (remove power, no further iterations can occur). At the same time the Klinkhammer and Echeverria solution to the Polchinski's paradox can be the basis of the time pump: an object or volume of water repeatedly teleports backward to displace itself, accumulating momentum, thus creating flow. The challenge is you cannot control the teleportation direction. As such, the time pump piping has to be on a six axis gimbal so it can keep the water flowing in the right direction, and must operate intermittently. Hence, the time pump is very large and bulky.
FAQ:
(For the purposes of forming an answer, time-travel problems need in-world mechanics explained. Per questions, here is the in-world answer):
- What happens to existing matter at the destination? A: Sent back another 0.5 seconds; and that material is again sent back (1 second now), and that material is sent back 1.5s., and so on. Those alternate timelines never manifest in-world, you are the first harmonic. In the end, as far as you know it is just gone.
- What is the precision of the destination? At 50 feet your object is placed in a region within 0.5 cm of the designed target. Shorter displacements reduce the error linearly. Thus a safely telecloned object sent 50 feet should expect to fall up to 1 cm.
- Can the plot use the erasing feature to profit? A: No, it can not. That would be an answer for a disintegration weapon. The answer must employ the telecloning feature in the answer, as the title says.
- How big is the smaller device? A: The smaller device can be a backpack-sized machine like Ghostbusters antimatter stream guns. But the device has to be stable and mounted to work, not on your back. It has to calibrate to the earth's movements very precisely before firing a successful nulling wave. Any vibrations will make the cloning fizzle and do nothing.
- How big is the larger device? A: Like an office desk turned on its side. It can pack into a van but can't be launched from the van unless the vehicle is stabilized on jacks, and the telecloning booth is also immobilized.
- Can I answer with the Grandfather Paradox? A: The answer must use the telecloning effect to create a revenue, not any other side-effect of the device. An object and all of its information have come back from the future. While this creates other consequences, those consequences are not unique to this device/plot and don't answer this unique problem.