To simplify the expression \(\frac{1}{8^{-4}}\), we can use the property of exponents that states \(a^{-n} = \frac{1}{a^{n}}\).
Thus, we can rewrite \(8^{-4}\) as \(\frac{1}{8^{4}}\):
\[ \frac{1}{8^{-4}} = 8^{4} \]
Now, we calculate \(8^{4}\):
\[ 8^{4} = (2^3)^{4} = 2^{12} = 4096 \]
So, the simplified expression with a positive exponent is:
\[ 8^4 \text{ or } 4096 \]