Most balcony shade privacy screens come in the accordion folded style, and can be moved quite easily, but are limited in their width. They are most commonly used to provide a complete blockage of light in a specific place on your balcony or patio, or for the detection of a specific, unsightly area. Make sure the type of privacy screen you are viewing does not need to be staked out on the floor to stay standing.
Other ideas of balcony shade privacy screens, lattice of the garden. If you have any interest in gardening, you can train vines to provide a foliage barrier for neighbors. Many trellises have support beams that are dense enough to provide decent privacy even before the plants grow completely up to the height of the trellis. Consider a rolling lattice if it moves often. The bushes and tall trees. Again, if you are willing to take the time and money for maintenance, dense shrubs or trees in pots can be an environmentally friendly way to provide a barrier to your yard and the outside world.
The curtains of the balcony shade privacy screens. There are large power outdoor curtains that can be hung inside your balcony that is sturdy enough to withstand the weather and can block out sunlight as well, if necessary. Privacy slats. If you have a wire fence, there are many options for weaving plastic slats or even imitating the ivy through the fence to create a much denser Barrier of the world. This consumes time and while it can technically be removed, it would be a long time to undo, too. Some rigid slats can also be woven in and out of a single vertical fence type.