No. One of the challenges is the size of the package and how deep it may be in a body cavity. We do know that the smaller the package, and the deeper it is in the body cavity, the less likely it is that this technology will be able to help us. But if somebody has secreted something of a substantial size, and not too far into a body cavity, we have found it's been able to detect the package.
We also know that this tool has been handy for us, because we've had individuals secret things other than packages of drugs in their body cavities—weapons—so from that perspective, this tool is useful for that as well.